Finding the Third Proportional to 72,647,990.25 and 111,815,442

Step by Step Solution

1. Step 1: Write the proportion equation
   72,647,990.25 : 111,815,442 = 111,815,442 : x
2. Step 2: Convert to fraction form
   72,647,990.25/111,815,442 = 111,815,442/x
3. Step 3: Cross multiply
   72,647,990.25x = 111,815,442 × 111,815,442
4. Step 4: Simplify right side
   72,647,990.25x = 12,502,693,069,655,364
5. Step 5: Solve for x
   x = 12,502,693,069,655,364/72,647,990.25
6. Step 6: Final answer
   x = 172,099,641.39