Right click on GH3>Change Group. In the Group Options section, check 'Customize Group Name Field', use 'Choose from existing field', and select your Company Name field.
In GH3, if you've got Group #3 Name in there, it should now print the Company Name that corresponds to the ID instead of just the ID.
Or, you could just get rid of the Group #3 Name field, and replace it with Company Name.
-dave