Finding the Third Proportional to 8,143.50 and 16,986

Step by Step Solution

1. Step 1: Write the proportion equation
   8,143.50 : 16,986 = 16,986 : x
2. Step 2: Convert to fraction form
   8,143.50/16,986 = 16,986/x
3. Step 3: Cross multiply
   8,143.50x = 16,986 × 16,986
4. Step 4: Simplify right side
   8,143.50x = 288,524,196
5. Step 5: Solve for x
   x = 288,524,196/8,143.50
6. Step 6: Final answer
   x = 35,430.00