Yes, the hub is identical
Same 5x112 PCD and same 66.5 mm centre bore: wheels from Porsche Macan bolt on and centre on BMW 5 Serie G60-G61-G68 without rings. You still need to check the offset and tyres, detailed below.
≈: width estimated from the original tyre size.
Wheel by wheel: offset and tyres
Each original wheel from Porsche Macan is compared with the one from BMW 5 Serie G60-G61-G68 of the same diameter: how much closer the wheel gets to the shock absorber or how far it sticks out of the wheel arch, and whether the tyre keeps the same overall diameter.
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≈7.5Jx18 ET26 · 235/60R18 — Fits like the original
Compared with the original 7.5Jx18 ET23 on BMW 5 Serie G60-G61-G68: shock absorber side +3 mm, wheel arch side −3 mm, tyre diameter +4.9 % : fit it with the original tyre size of BMW 5 Serie G60-G61-G68 (225/55R18), not that of Porsche Macan.
Comparison for guidance only (estimated width). Check in detail
Before fitting the wheels
An identical hub is not enough: offset, width and diameter change the position of the wheel, and larger calipers can touch a smaller wheel. Original wheels often use bolts or nuts with a specific seat: keep the fixings intended for the wheel, with the thread of BMW 5 Serie G60-G61-G68 (M14x1.25), tightened to the torque shown on its vehicle page. Finally, check that the size is among the approved fitments for your vehicle. This comparison is for guidance only: have the fitting approved by a professional.
And the other way round: wheels from BMW 5 Serie G60-G61-G68 on Porsche Macan?