Finding the Third Proportional to 688,401 and 1,491,186

Step by Step Solution

1. Step 1: Write the proportion equation
   688,401 : 1,491,186 = 1,491,186 : x
2. Step 2: Convert to fraction form
   688,401/1,491,186 = 1,491,186/x
3. Step 3: Cross multiply
   688,401x = 1,491,186 × 1,491,186
4. Step 4: Simplify right side
   688,401x = 2,223,635,686,596
5. Step 5: Solve for x
   x = 2,223,635,686,596/688,401
6. Step 6: Final answer
   x = 3,230,145.93