Finding the Third Proportional to 81,472.50 and 170,730

Step by Step Solution

1. Step 1: Write the proportion equation
   81,472.50 : 170,730 = 170,730 : x
2. Step 2: Convert to fraction form
   81,472.50/170,730 = 170,730/x
3. Step 3: Cross multiply
   81,472.50x = 170,730 × 170,730
4. Step 4: Simplify right side
   81,472.50x = 29,148,732,900
5. Step 5: Solve for x
   x = 29,148,732,900/81,472.50
6. Step 6: Final answer
   x = 357,773.89