Finding the Third Proportional to 88,499,673 and 138,829,747.50

Step by Step Solution

1. Step 1: Write the proportion equation
   88,499,673 : 138,829,747.50 = 138,829,747.50 : x
2. Step 2: Convert to fraction form
   88,499,673/138,829,747.50 = 138,829,747.50/x
3. Step 3: Cross multiply
   88,499,673x = 138,829,747.50 × 138,829,747.50
4. Step 4: Simplify right side
   88,499,673x = 19,273,698,790,913,756
5. Step 5: Solve for x
   x = 19,273,698,790,913,756/88,499,673
6. Step 6: Final answer
   x = 217,782,711.93