Finding the Third Proportional to 688,395 and 1,491,200

Step by Step Solution

1. Step 1: Write the proportion equation
   688,395 : 1,491,200 = 1,491,200 : x
2. Step 2: Convert to fraction form
   688,395/1,491,200 = 1,491,200/x
3. Step 3: Cross multiply
   688,395x = 1,491,200 × 1,491,200
4. Step 4: Simplify right side
   688,395x = 2,223,677,440,000
5. Step 5: Solve for x
   x = 2,223,677,440,000/688,395
6. Step 6: Final answer
   x = 3,230,234.73