Finding the Third Proportional to 11,481 and 12,561

Step by Step Solution

1. Step 1: Write the proportion equation
   11,481 : 12,561 = 12,561 : x
2. Step 2: Convert to fraction form
   11,481/12,561 = 12,561/x
3. Step 3: Cross multiply
   11,481x = 12,561 × 12,561
4. Step 4: Simplify right side
   11,481x = 157,778,721
5. Step 5: Solve for x
   x = 157,778,721/11,481
6. Step 6: Final answer
   x = 13,742.59