Finding the Third Proportional to 5,870 and 12,400

Step by Step Solution

1. Step 1: Write the proportion equation
   5,870 : 12,400 = 12,400 : x
2. Step 2: Convert to fraction form
   5,870/12,400 = 12,400/x
3. Step 3: Cross multiply
   5,870x = 12,400 × 12,400
4. Step 4: Simplify right side
   5,870x = 153,760,000
5. Step 5: Solve for x
   x = 153,760,000/5,870
6. Step 6: Final answer
   x = 26,194.21