Finding the Third Proportional to 126,309 and 270,124.50

Step by Step Solution

1. Step 1: Write the proportion equation
   126,309 : 270,124.50 = 270,124.50 : x
2. Step 2: Convert to fraction form
   126,309/270,124.50 = 270,124.50/x
3. Step 3: Cross multiply
   126,309x = 270,124.50 × 270,124.50
4. Step 4: Simplify right side
   126,309x = 72,967,245,500.25
5. Step 5: Solve for x
   x = 72,967,245,500.25/126,309
6. Step 6: Final answer
   x = 577,688.41