Finding the Third Proportional to 126,681 and 268,909.50

Step by Step Solution

1. Step 1: Write the proportion equation
   126,681 : 268,909.50 = 268,909.50 : x
2. Step 2: Convert to fraction form
   126,681/268,909.50 = 268,909.50/x
3. Step 3: Cross multiply
   126,681x = 268,909.50 × 268,909.50
4. Step 4: Simplify right side
   126,681x = 72,312,319,190.25
5. Step 5: Solve for x
   x = 72,312,319,190.25/126,681
6. Step 6: Final answer
   x = 570,822.14