Finding the Third Proportional to 3,559.57 and 8,483.17

Step by Step Solution

1. Step 1: Write the proportion equation
   3,559.57 : 8,483.17 = 8,483.17 : x
2. Step 2: Convert to fraction form
   3,559.57/8,483.17 = 8,483.17/x
3. Step 3: Cross multiply
   3,559.57x = 8,483.17 × 8,483.17
4. Step 4: Simplify right side
   3,559.57x = 71,964,138.79
5. Step 5: Solve for x
   x = 71,964,138.79/3,559.57
6. Step 6: Final answer
   x = 20,217.09