Finding the Third Proportional to 688,680 and 1,491,744

Step by Step Solution

1. Step 1: Write the proportion equation
   688,680 : 1,491,744 = 1,491,744 : x
2. Step 2: Convert to fraction form
   688,680/1,491,744 = 1,491,744/x
3. Step 3: Cross multiply
   688,680x = 1,491,744 × 1,491,744
4. Step 4: Simplify right side
   688,680x = 2,225,300,161,536
5. Step 5: Solve for x
   x = 2,225,300,161,536/688,680
6. Step 6: Final answer
   x = 3,231,254.23