Maybe you could convert the drawing to KML then import to My Maps ?
Thats a thought.....DXF into QGIS
"save as' to KML should work
... Or just export to KML/KMZ from C3D.
Toolspace, Toolbox tab, Miscellaneous Utilities node, Export KML node, right click Export KML (yes, there's two of them), select *Execute.
I 'spose you could be lazy, and just use the EXPORTKML Command instead. Haha
*Note - May require A360 login, and as always, be mindful of your Drawing Settings.
Cheers