Finding the Third Proportional to 8,662.88 and 13,408.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,662.88 : 13,408.31 = 13,408.31 : x
2. Step 2: Convert to fraction form
   8,662.88/13,408.31 = 13,408.31/x
3. Step 3: Cross multiply
   8,662.88x = 13,408.31 × 13,408.31
4. Step 4: Simplify right side
   8,662.88x = 179,782,844.10
5. Step 5: Solve for x
   x = 179,782,844.10/8,662.88
6. Step 6: Final answer
   x = 20,753.25