Finding the Third Proportional to 688,315 and 1,491,036

Step by Step Solution

1. Step 1: Write the proportion equation
   688,315 : 1,491,036 = 1,491,036 : x
2. Step 2: Convert to fraction form
   688,315/1,491,036 = 1,491,036/x
3. Step 3: Cross multiply
   688,315x = 1,491,036 × 1,491,036
4. Step 4: Simplify right side
   688,315x = 2,223,188,353,296
5. Step 5: Solve for x
   x = 2,223,188,353,296/688,315
6. Step 6: Final answer
   x = 3,229,899.61