Finding the Third Proportional to 7,039.50 and 9,900

Step by Step Solution

1. Step 1: Write the proportion equation
   7,039.50 : 9,900 = 9,900 : x
2. Step 2: Convert to fraction form
   7,039.50/9,900 = 9,900/x
3. Step 3: Cross multiply
   7,039.50x = 9,900 × 9,900
4. Step 4: Simplify right side
   7,039.50x = 98,010,000
5. Step 5: Solve for x
   x = 98,010,000/7,039.50
6. Step 6: Final answer
   x = 13,922.86