Finding the Third Proportional to 81,808,908.75 and 123,561,724.50

Step by Step Solution

1. Step 1: Write the proportion equation
   81,808,908.75 : 123,561,724.50 = 123,561,724.50 : x
2. Step 2: Convert to fraction form
   81,808,908.75/123,561,724.50 = 123,561,724.50/x
3. Step 3: Cross multiply
   81,808,908.75x = 123,561,724.50 × 123,561,724.50
4. Step 4: Simplify right side
   81,808,908.75x = 15,267,499,761,413,900
5. Step 5: Solve for x
   x = 15,267,499,761,413,900/81,808,908.75
6. Step 6: Final answer
   x = 186,623,926.35