Finding the Third Proportional to 3,949.50 and 8,445.75

Step by Step Solution

1. Step 1: Write the proportion equation
   3,949.50 : 8,445.75 = 8,445.75 : x
2. Step 2: Convert to fraction form
   3,949.50/8,445.75 = 8,445.75/x
3. Step 3: Cross multiply
   3,949.50x = 8,445.75 × 8,445.75
4. Step 4: Simplify right side
   3,949.50x = 71,330,693.06
5. Step 5: Solve for x
   x = 71,330,693.06/3,949.50
6. Step 6: Final answer
   x = 18,060.69