Finding the Third Proportional to 5,582.25 and 8,445.38

Step by Step Solution

1. Step 1: Write the proportion equation
   5,582.25 : 8,445.38 = 8,445.38 : x
2. Step 2: Convert to fraction form
   5,582.25/8,445.38 = 8,445.38/x
3. Step 3: Cross multiply
   5,582.25x = 8,445.38 × 8,445.38
4. Step 4: Simplify right side
   5,582.25x = 71,324,358.89
5. Step 5: Solve for x
   x = 71,324,358.89/5,582.25
6. Step 6: Final answer
   x = 12,776.99