Finding the Third Proportional to 86,562.38 and 129,498.56

Step by Step Solution

1. Step 1: Write the proportion equation
   86,562.38 : 129,498.56 = 129,498.56 : x
2. Step 2: Convert to fraction form
   86,562.38/129,498.56 = 129,498.56/x
3. Step 3: Cross multiply
   86,562.38x = 129,498.56 × 129,498.56
4. Step 4: Simplify right side
   86,562.38x = 16,769,877,689.57
5. Step 5: Solve for x
   x = 16,769,877,689.57/86,562.38
6. Step 6: Final answer
   x = 193,731.72