Finding the Third Proportional to 2,660 and 5,714.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,660 : 5,714.88 = 5,714.88 : x
2. Step 2: Convert to fraction form
   2,660/5,714.88 = 5,714.88/x
3. Step 3: Cross multiply
   2,660x = 5,714.88 × 5,714.88
4. Step 4: Simplify right side
   2,660x = 32,659,796.27
5. Step 5: Solve for x
   x = 32,659,796.27/2,660
6. Step 6: Final answer
   x = 12,278.12