Finding the Third Proportional to 85,984,809,397.50 and 128,231,563,687.50

Step by Step Solution

1. Step 1: Write the proportion equation
   85,984,809,397.50 : 128,231,563,687.50 = 128,231,563,687.50 : x
2. Step 2: Convert to fraction form
   85,984,809,397.50/128,231,563,687.50 = 128,231,563,687.50/x
3. Step 3: Cross multiply
   85,984,809,397.50x = 128,231,563,687.50 × 128,231,563,687.50
4. Step 4: Simplify right side
   85,984,809,397.50x = 16,443,333,925,741,367,656,448
5. Step 5: Solve for x
   x = 16,443,333,925,741,367,656,448/85,984,809,397.50
6. Step 6: Final answer
   x = 191,235,336,112.98