Finding the Third Proportional to 151,540 and 329,680

Step by Step Solution

1. Step 1: Write the proportion equation
   151,540 : 329,680 = 329,680 : x
2. Step 2: Convert to fraction form
   151,540/329,680 = 329,680/x
3. Step 3: Cross multiply
   151,540x = 329,680 × 329,680
4. Step 4: Simplify right side
   151,540x = 108,688,902,400
5. Step 5: Solve for x
   x = 108,688,902,400/151,540
6. Step 6: Final answer
   x = 717,229.13