Finding the Third Proportional to 3,940.31 and 8,452.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,940.31 : 8,452.69 = 8,452.69 : x
2. Step 2: Convert to fraction form
   3,940.31/8,452.69 = 8,452.69/x
3. Step 3: Cross multiply
   3,940.31x = 8,452.69 × 8,452.69
4. Step 4: Simplify right side
   3,940.31x = 71,447,925.97
5. Step 5: Solve for x
   x = 71,447,925.97/3,940.31
6. Step 6: Final answer
   x = 18,132.55