Finding the Third Proportional to 126,227.50 and 272,138

Step by Step Solution

1. Step 1: Write the proportion equation
   126,227.50 : 272,138 = 272,138 : x
2. Step 2: Convert to fraction form
   126,227.50/272,138 = 272,138/x
3. Step 3: Cross multiply
   126,227.50x = 272,138 × 272,138
4. Step 4: Simplify right side
   126,227.50x = 74,059,091,044
5. Step 5: Solve for x
   x = 74,059,091,044/126,227.50
6. Step 6: Final answer
   x = 586,711.22