Finding the Third Proportional to 12,105 and 17,142.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,105 : 17,142.75 = 17,142.75 : x
2. Step 2: Convert to fraction form
   12,105/17,142.75 = 17,142.75/x
3. Step 3: Cross multiply
   12,105x = 17,142.75 × 17,142.75
4. Step 4: Simplify right side
   12,105x = 293,873,877.56
5. Step 5: Solve for x
   x = 293,873,877.56/12,105
6. Step 6: Final answer
   x = 24,277.07