Finding the Third Proportional to 72,317.25 and 155,731.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,317.25 : 155,731.50 = 155,731.50 : x
2. Step 2: Convert to fraction form
   72,317.25/155,731.50 = 155,731.50/x
3. Step 3: Cross multiply
   72,317.25x = 155,731.50 × 155,731.50
4. Step 4: Simplify right side
   72,317.25x = 24,252,300,092.25
5. Step 5: Solve for x
   x = 24,252,300,092.25/72,317.25
6. Step 6: Final answer
   x = 335,359.82