Finding the Third Proportional to 124,650 and 272,139

Step by Step Solution

1. Step 1: Write the proportion equation
   124,650 : 272,139 = 272,139 : x
2. Step 2: Convert to fraction form
   124,650/272,139 = 272,139/x
3. Step 3: Cross multiply
   124,650x = 272,139 × 272,139
4. Step 4: Simplify right side
   124,650x = 74,059,635,321
5. Step 5: Solve for x
   x = 74,059,635,321/124,650
6. Step 6: Final answer
   x = 594,140.68