Finding the Third Proportional to 124,980 and 272,142

Step by Step Solution

1. Step 1: Write the proportion equation
   124,980 : 272,142 = 272,142 : x
2. Step 2: Convert to fraction form
   124,980/272,142 = 272,142/x
3. Step 3: Cross multiply
   124,980x = 272,142 × 272,142
4. Step 4: Simplify right side
   124,980x = 74,061,268,164
5. Step 5: Solve for x
   x = 74,061,268,164/124,980
6. Step 6: Final answer
   x = 592,584.96