Finding the Third Proportional to 2,642.91 and 5,751.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,642.91 : 5,751.56 = 5,751.56 : x
2. Step 2: Convert to fraction form
   2,642.91/5,751.56 = 5,751.56/x
3. Step 3: Cross multiply
   2,642.91x = 5,751.56 × 5,751.56
4. Step 4: Simplify right side
   2,642.91x = 33,080,471.19
5. Step 5: Solve for x
   x = 33,080,471.19/2,642.91
6. Step 6: Final answer
   x = 12,516.70