Finding the Third Proportional to 688,398 and 1,491,180

Step by Step Solution

1. Step 1: Write the proportion equation
   688,398 : 1,491,180 = 1,491,180 : x
2. Step 2: Convert to fraction form
   688,398/1,491,180 = 1,491,180/x
3. Step 3: Cross multiply
   688,398x = 1,491,180 × 1,491,180
4. Step 4: Simplify right side
   688,398x = 2,223,617,792,400
5. Step 5: Solve for x
   x = 2,223,617,792,400/688,398
6. Step 6: Final answer
   x = 3,230,134.01