Finding the Third Proportional to 688,476 and 1,491,320

Step by Step Solution

1. Step 1: Write the proportion equation
   688,476 : 1,491,320 = 1,491,320 : x
2. Step 2: Convert to fraction form
   688,476/1,491,320 = 1,491,320/x
3. Step 3: Cross multiply
   688,476x = 1,491,320 × 1,491,320
4. Step 4: Simplify right side
   688,476x = 2,224,035,342,400
5. Step 5: Solve for x
   x = 2,224,035,342,400/688,476
6. Step 6: Final answer
   x = 3,230,374.54