Finding the Third Proportional to 53,317 and 123,429.50

Step by Step Solution

1. Step 1: Write the proportion equation
   53,317 : 123,429.50 = 123,429.50 : x
2. Step 2: Convert to fraction form
   53,317/123,429.50 = 123,429.50/x
3. Step 3: Cross multiply
   53,317x = 123,429.50 × 123,429.50
4. Step 4: Simplify right side
   53,317x = 15,234,841,470.25
5. Step 5: Solve for x
   x = 15,234,841,470.25/53,317
6. Step 6: Final answer
   x = 285,740.79