Finding the Third Proportional to 2,452.78 and 5,313.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,452.78 : 5,313.09 = 5,313.09 : x
2. Step 2: Convert to fraction form
   2,452.78/5,313.09 = 5,313.09/x
3. Step 3: Cross multiply
   2,452.78x = 5,313.09 × 5,313.09
4. Step 4: Simplify right side
   2,452.78x = 28,228,965.20
5. Step 5: Solve for x
   x = 28,228,965.20/2,452.78
6. Step 6: Final answer
   x = 11,508.96