Finding the Third Proportional to 158,357 and 329,819

Step by Step Solution

1. Step 1: Write the proportion equation
   158,357 : 329,819 = 329,819 : x
2. Step 2: Convert to fraction form
   158,357/329,819 = 329,819/x
3. Step 3: Cross multiply
   158,357x = 329,819 × 329,819
4. Step 4: Simplify right side
   158,357x = 108,780,572,761
5. Step 5: Solve for x
   x = 108,780,572,761/158,357
6. Step 6: Final answer
   x = 686,932.52