Finding the Third Proportional to 688,455 and 1,491,282

Step by Step Solution

1. Step 1: Write the proportion equation
   688,455 : 1,491,282 = 1,491,282 : x
2. Step 2: Convert to fraction form
   688,455/1,491,282 = 1,491,282/x
3. Step 3: Cross multiply
   688,455x = 1,491,282 × 1,491,282
4. Step 4: Simplify right side
   688,455x = 2,223,922,003,524
5. Step 5: Solve for x
   x = 2,223,922,003,524/688,455
6. Step 6: Final answer
   x = 3,230,308.45