Finding the Third Proportional to 5,256.56 and 12,283.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,256.56 : 12,283.31 = 12,283.31 : x
2. Step 2: Convert to fraction form
   5,256.56/12,283.31 = 12,283.31/x
3. Step 3: Cross multiply
   5,256.56x = 12,283.31 × 12,283.31
4. Step 4: Simplify right side
   5,256.56x = 150,879,765.97
5. Step 5: Solve for x
   x = 150,879,765.97/5,256.56
6. Step 6: Final answer
   x = 28,703.12