Finding the Third Proportional to 2,959.03 and 7,879.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,959.03 : 7,879.78 = 7,879.78 : x
2. Step 2: Convert to fraction form
   2,959.03/7,879.78 = 7,879.78/x
3. Step 3: Cross multiply
   2,959.03x = 7,879.78 × 7,879.78
4. Step 4: Simplify right side
   2,959.03x = 62,090,952.55
5. Step 5: Solve for x
   x = 62,090,952.55/2,959.03
6. Step 6: Final answer
   x = 20,983.54