Finding the Third Proportional to 12,139.41 and 26,687.81

Step by Step Solution

1. Step 1: Write the proportion equation
   12,139.41 : 26,687.81 = 26,687.81 : x
2. Step 2: Convert to fraction form
   12,139.41/26,687.81 = 26,687.81/x
3. Step 3: Cross multiply
   12,139.41x = 26,687.81 × 26,687.81
4. Step 4: Simplify right side
   12,139.41x = 712,239,336.04
5. Step 5: Solve for x
   x = 712,239,336.04/12,139.41
6. Step 6: Final answer
   x = 58,671.68