Finding the Third Proportional to 12,175.31 and 13,218.19

Step by Step Solution

1. Step 1: Write the proportion equation
   12,175.31 : 13,218.19 = 13,218.19 : x
2. Step 2: Convert to fraction form
   12,175.31/13,218.19 = 13,218.19/x
3. Step 3: Cross multiply
   12,175.31x = 13,218.19 × 13,218.19
4. Step 4: Simplify right side
   12,175.31x = 174,720,480.79
5. Step 5: Solve for x
   x = 174,720,480.79/12,175.31
6. Step 6: Final answer
   x = 14,350.39