Pivot Table Subtotal of Subtotals

I have the attached example spreadsheet where I have three people that have made payments to three different companies with a pivot table on sheet 2. I have subtotals set up for each person showing what the paid in total to the three different companies.

Is there any way to show how much in total was paid to each three companies for all people in the data set like the yellow highlighted area in sheet 3 using the pivot table?