Can i have 1 different sized wheel on my car?

I recently bought a 200 Ford Taurus, not from a dealer, and it was missing one wheel. It has the spare on for now, but I'm not wanting to spend a lot to replace the wheel, but I can't find an exact match for cheap.

My tires are 215/60R16 and rims are 7Jx16ET42. I found someone who has some old Taurus rims but they are 16" x 8" and I do not know the offset. From what I've read, my size tires will only fit on 6-7.5" rims. Assuming that the offset is an acceptable one, could I put a tire that fits 8" wide rim on that one?

Not if your wish to maintain proper handling, control and stability for your Ford.