Finding the Third Proportional to 126,316.50 and 272,665.50

Step by Step Solution

1. Step 1: Write the proportion equation
   126,316.50 : 272,665.50 = 272,665.50 : x
2. Step 2: Convert to fraction form
   126,316.50/272,665.50 = 272,665.50/x
3. Step 3: Cross multiply
   126,316.50x = 272,665.50 × 272,665.50
4. Step 4: Simplify right side
   126,316.50x = 74,346,474,890.25
5. Step 5: Solve for x
   x = 74,346,474,890.25/126,316.50
6. Step 6: Final answer
   x = 588,572.95