Finding the Third Proportional to 688,624 and 1,491,596

Step by Step Solution

1. Step 1: Write the proportion equation
   688,624 : 1,491,596 = 1,491,596 : x
2. Step 2: Convert to fraction form
   688,624/1,491,596 = 1,491,596/x
3. Step 3: Cross multiply
   688,624x = 1,491,596 × 1,491,596
4. Step 4: Simplify right side
   688,624x = 2,224,858,627,216
5. Step 5: Solve for x
   x = 2,224,858,627,216/688,624
6. Step 6: Final answer
   x = 3,230,875.81