Finding the Third Proportional to 10,722 and 12,540

Step by Step Solution

1. Step 1: Write the proportion equation
   10,722 : 12,540 = 12,540 : x
2. Step 2: Convert to fraction form
   10,722/12,540 = 12,540/x
3. Step 3: Cross multiply
   10,722x = 12,540 × 12,540
4. Step 4: Simplify right side
   10,722x = 157,251,600
5. Step 5: Solve for x
   x = 157,251,600/10,722
6. Step 6: Final answer
   x = 14,666.26