Finding the Third Proportional to 2,851.50 and 7,716

Step by Step Solution

1. Step 1: Write the proportion equation
   2,851.50 : 7,716 = 7,716 : x
2. Step 2: Convert to fraction form
   2,851.50/7,716 = 7,716/x
3. Step 3: Cross multiply
   2,851.50x = 7,716 × 7,716
4. Step 4: Simplify right side
   2,851.50x = 59,536,656
5. Step 5: Solve for x
   x = 59,536,656/2,851.50
6. Step 6: Final answer
   x = 20,879.07