Finding the Third Proportional to 156,853 and 339,540

Step by Step Solution

1. Step 1: Write the proportion equation
   156,853 : 339,540 = 339,540 : x
2. Step 2: Convert to fraction form
   156,853/339,540 = 339,540/x
3. Step 3: Cross multiply
   156,853x = 339,540 × 339,540
4. Step 4: Simplify right side
   156,853x = 115,287,411,600
5. Step 5: Solve for x
   x = 115,287,411,600/156,853
6. Step 6: Final answer
   x = 735,002.91