Finding the Third Proportional to 218,485,761.50 and 468,135,510.50

Step by Step Solution

1. Step 1: Write the proportion equation
   218,485,761.50 : 468,135,510.50 = 468,135,510.50 : x
2. Step 2: Convert to fraction form
   218,485,761.50/468,135,510.50 = 468,135,510.50/x
3. Step 3: Cross multiply
   218,485,761.50x = 468,135,510.50 × 468,135,510.50
4. Step 4: Simplify right side
   218,485,761.50x = 219,150,856,191,095,616
5. Step 5: Solve for x
   x = 219,150,856,191,095,616/218,485,761.50
6. Step 6: Final answer
   x = 1,003,044,110.00