Finding the Third Proportional to 156,478.50 and 335,098.50

Step by Step Solution

1. Step 1: Write the proportion equation
   156,478.50 : 335,098.50 = 335,098.50 : x
2. Step 2: Convert to fraction form
   156,478.50/335,098.50 = 335,098.50/x
3. Step 3: Cross multiply
   156,478.50x = 335,098.50 × 335,098.50
4. Step 4: Simplify right side
   156,478.50x = 112,291,004,702.25
5. Step 5: Solve for x
   x = 112,291,004,702.25/156,478.50
6. Step 6: Final answer
   x = 717,612.99