Finding the Third Proportional to 5,410.97 and 8,458.17

Step by Step Solution

1. Step 1: Write the proportion equation
   5,410.97 : 8,458.17 = 8,458.17 : x
2. Step 2: Convert to fraction form
   5,410.97/8,458.17 = 8,458.17/x
3. Step 3: Cross multiply
   5,410.97x = 8,458.17 × 8,458.17
4. Step 4: Simplify right side
   5,410.97x = 71,540,671.47
5. Step 5: Solve for x
   x = 71,540,671.47/5,410.97
6. Step 6: Final answer
   x = 13,221.42