Finding the Third Proportional to 156,940.50 and 339,031.50

Step by Step Solution

1. Step 1: Write the proportion equation
   156,940.50 : 339,031.50 = 339,031.50 : x
2. Step 2: Convert to fraction form
   156,940.50/339,031.50 = 339,031.50/x
3. Step 3: Cross multiply
   156,940.50x = 339,031.50 × 339,031.50
4. Step 4: Simplify right side
   156,940.50x = 114,942,357,992.25
5. Step 5: Solve for x
   x = 114,942,357,992.25/156,940.50
6. Step 6: Final answer
   x = 732,394.49