Finding the Third Proportional to 688,472 and 1,491,312

Step by Step Solution

1. Step 1: Write the proportion equation
   688,472 : 1,491,312 = 1,491,312 : x
2. Step 2: Convert to fraction form
   688,472/1,491,312 = 1,491,312/x
3. Step 3: Cross multiply
   688,472x = 1,491,312 × 1,491,312
4. Step 4: Simplify right side
   688,472x = 2,224,011,481,344
5. Step 5: Solve for x
   x = 2,224,011,481,344/688,472
6. Step 6: Final answer
   x = 3,230,358.65