Finding the Third Proportional to 12,474 and 18,129.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,474 : 18,129.38 = 18,129.38 : x
2. Step 2: Convert to fraction form
   12,474/18,129.38 = 18,129.38/x
3. Step 3: Cross multiply
   12,474x = 18,129.38 × 18,129.38
4. Step 4: Simplify right side
   12,474x = 328,674,237.89
5. Step 5: Solve for x
   x = 328,674,237.89/12,474
6. Step 6: Final answer
   x = 26,348.74