Finding the Third Proportional to 158,854.50 and 328,725

Step by Step Solution

1. Step 1: Write the proportion equation
   158,854.50 : 328,725 = 328,725 : x
2. Step 2: Convert to fraction form
   158,854.50/328,725 = 328,725/x
3. Step 3: Cross multiply
   158,854.50x = 328,725 × 328,725
4. Step 4: Simplify right side
   158,854.50x = 108,060,125,625
5. Step 5: Solve for x
   x = 108,060,125,625/158,854.50
6. Step 6: Final answer
   x = 680,245.92