Finding the Third Proportional to 2,179.69 and 3,379.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,179.69 : 3,379.78 = 3,379.78 : x
2. Step 2: Convert to fraction form
   2,179.69/3,379.78 = 3,379.78/x
3. Step 3: Cross multiply
   2,179.69x = 3,379.78 × 3,379.78
4. Step 4: Simplify right side
   2,179.69x = 11,422,921.30
5. Step 5: Solve for x
   x = 11,422,921.30/2,179.69
6. Step 6: Final answer
   x = 5,240.62