Finding the Third Proportional to 1,240.31 and 1,756.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,240.31 : 1,756.69 = 1,756.69 : x
2. Step 2: Convert to fraction form
   1,240.31/1,756.69 = 1,756.69/x
3. Step 3: Cross multiply
   1,240.31x = 1,756.69 × 1,756.69
4. Step 4: Simplify right side
   1,240.31x = 3,085,950.97
5. Step 5: Solve for x
   x = 3,085,950.97/1,240.31
6. Step 6: Final answer
   x = 2,488.04