Finding the Third Proportional to 129,650 and 268,300

Step by Step Solution

1. Step 1: Write the proportion equation
   129,650 : 268,300 = 268,300 : x
2. Step 2: Convert to fraction form
   129,650/268,300 = 268,300/x
3. Step 3: Cross multiply
   129,650x = 268,300 × 268,300
4. Step 4: Simplify right side
   129,650x = 71,984,890,000
5. Step 5: Solve for x
   x = 71,984,890,000/129,650
6. Step 6: Final answer
   x = 555,224.76