Finding the Third Proportional to 8,440.50 and 18,469.75

Step by Step Solution

1. Step 1: Write the proportion equation
   8,440.50 : 18,469.75 = 18,469.75 : x
2. Step 2: Convert to fraction form
   8,440.50/18,469.75 = 18,469.75/x
3. Step 3: Cross multiply
   8,440.50x = 18,469.75 × 18,469.75
4. Step 4: Simplify right side
   8,440.50x = 341,131,665.06
5. Step 5: Solve for x
   x = 341,131,665.06/8,440.50
6. Step 6: Final answer
   x = 40,416.05