Finding the Third Proportional to 12,129.75 and 26,254.13

Step by Step Solution

1. Step 1: Write the proportion equation
   12,129.75 : 26,254.13 = 26,254.13 : x
2. Step 2: Convert to fraction form
   12,129.75/26,254.13 = 26,254.13/x
3. Step 3: Cross multiply
   12,129.75x = 26,254.13 × 26,254.13
4. Step 4: Simplify right side
   12,129.75x = 689,279,079.52
5. Step 5: Solve for x
   x = 689,279,079.52/12,129.75
6. Step 6: Final answer
   x = 56,825.50