Finding the Third Proportional to 4,429.69 and 7,879.78

Step by Step Solution

1. Step 1: Write the proportion equation
   4,429.69 : 7,879.78 = 7,879.78 : x
2. Step 2: Convert to fraction form
   4,429.69/7,879.78 = 7,879.78/x
3. Step 3: Cross multiply
   4,429.69x = 7,879.78 × 7,879.78
4. Step 4: Simplify right side
   4,429.69x = 62,090,952.55
5. Step 5: Solve for x
   x = 62,090,952.55/4,429.69
6. Step 6: Final answer
   x = 14,017.01