Save as .3DS from Sketchup Pro. Open as Object in Archicad (to get it in 3D) and Save. (there are tons of tips on this here - Search!)
If you can't Open the 3DS, check and download the 3DS Import Add-On. You'll find it under Goodies in the Help menu.
AC4.1-AC26SWE; MacOS13.5.1; MP5,1+MBP16,1