Finding the Third Proportional to 12,877.31 and 27,138.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,877.31 : 27,138.38 = 27,138.38 : x
2. Step 2: Convert to fraction form
   12,877.31/27,138.38 = 27,138.38/x
3. Step 3: Cross multiply
   12,877.31x = 27,138.38 × 27,138.38
4. Step 4: Simplify right side
   12,877.31x = 736,491,397.64
5. Step 5: Solve for x
   x = 736,491,397.64/12,877.31
6. Step 6: Final answer
   x = 57,192.94