Finding the Third Proportional to 8,405.50 and 17,915

Step by Step Solution

1. Step 1: Write the proportion equation
   8,405.50 : 17,915 = 17,915 : x
2. Step 2: Convert to fraction form
   8,405.50/17,915 = 17,915/x
3. Step 3: Cross multiply
   8,405.50x = 17,915 × 17,915
4. Step 4: Simplify right side
   8,405.50x = 320,947,225
5. Step 5: Solve for x
   x = 320,947,225/8,405.50
6. Step 6: Final answer
   x = 38,183.00