Finding the Third Proportional to 688,317 and 1,491,040

Step by Step Solution

1. Step 1: Write the proportion equation
   688,317 : 1,491,040 = 1,491,040 : x
2. Step 2: Convert to fraction form
   688,317/1,491,040 = 1,491,040/x
3. Step 3: Cross multiply
   688,317x = 1,491,040 × 1,491,040
4. Step 4: Simplify right side
   688,317x = 2,223,200,281,600
5. Step 5: Solve for x
   x = 2,223,200,281,600/688,317
6. Step 6: Final answer
   x = 3,229,907.56