Finding the Third Proportional to 8,707.50 and 18,799.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,707.50 : 18,799.88 = 18,799.88 : x
2. Step 2: Convert to fraction form
   8,707.50/18,799.88 = 18,799.88/x
3. Step 3: Cross multiply
   8,707.50x = 18,799.88 × 18,799.88
4. Step 4: Simplify right side
   8,707.50x = 353,435,300.02
5. Step 5: Solve for x
   x = 353,435,300.02/8,707.50
6. Step 6: Final answer
   x = 40,589.76