Finding the Third Proportional to 122,854.50 and 252,468

Step by Step Solution

1. Step 1: Write the proportion equation
   122,854.50 : 252,468 = 252,468 : x
2. Step 2: Convert to fraction form
   122,854.50/252,468 = 252,468/x
3. Step 3: Cross multiply
   122,854.50x = 252,468 × 252,468
4. Step 4: Simplify right side
   122,854.50x = 63,740,091,024
5. Step 5: Solve for x
   x = 63,740,091,024/122,854.50
6. Step 6: Final answer
   x = 518,825.86