Finding the Third Proportional to 13,057.88 and 16,345.13

Step by Step Solution

1. Step 1: Write the proportion equation
   13,057.88 : 16,345.13 = 16,345.13 : x
2. Step 2: Convert to fraction form
   13,057.88/16,345.13 = 16,345.13/x
3. Step 3: Cross multiply
   13,057.88x = 16,345.13 × 16,345.13
4. Step 4: Simplify right side
   13,057.88x = 267,163,111.27
5. Step 5: Solve for x
   x = 267,163,111.27/13,057.88
6. Step 6: Final answer
   x = 20,459.92