Finding the Third Proportional to 6,280 and 12,400

Step by Step Solution

1. Step 1: Write the proportion equation
   6,280 : 12,400 = 12,400 : x
2. Step 2: Convert to fraction form
   6,280/12,400 = 12,400/x
3. Step 3: Cross multiply
   6,280x = 12,400 × 12,400
4. Step 4: Simplify right side
   6,280x = 153,760,000
5. Step 5: Solve for x
   x = 153,760,000/6,280
6. Step 6: Final answer
   x = 24,484.08