Finding the Third Proportional to 3,932.25 and 8,479.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,932.25 : 8,479.50 = 8,479.50 : x
2. Step 2: Convert to fraction form
   3,932.25/8,479.50 = 8,479.50/x
3. Step 3: Cross multiply
   3,932.25x = 8,479.50 × 8,479.50
4. Step 4: Simplify right side
   3,932.25x = 71,901,920.25
5. Step 5: Solve for x
   x = 71,901,920.25/3,932.25
6. Step 6: Final answer
   x = 18,285.19