Finding the Third Proportional to 8,661.09 and 13,105.13

Step by Step Solution

1. Step 1: Write the proportion equation
   8,661.09 : 13,105.13 = 13,105.13 : x
2. Step 2: Convert to fraction form
   8,661.09/13,105.13 = 13,105.13/x
3. Step 3: Cross multiply
   8,661.09x = 13,105.13 × 13,105.13
4. Step 4: Simplify right side
   8,661.09x = 171,744,301.27
5. Step 5: Solve for x
   x = 171,744,301.27/8,661.09
6. Step 6: Final answer
   x = 19,829.40