Finding the Third Proportional to 2,104.31 and 3,115.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,104.31 : 3,115.69 = 3,115.69 : x
2. Step 2: Convert to fraction form
   2,104.31/3,115.69 = 3,115.69/x
3. Step 3: Cross multiply
   2,104.31x = 3,115.69 × 3,115.69
4. Step 4: Simplify right side
   2,104.31x = 9,707,508.60
5. Step 5: Solve for x
   x = 9,707,508.60/2,104.31
6. Step 6: Final answer
   x = 4,613.15