Finding the Third Proportional to 687,170 and 1,479,694

Step by Step Solution

1. Step 1: Write the proportion equation
   687,170 : 1,479,694 = 1,479,694 : x
2. Step 2: Convert to fraction form
   687,170/1,479,694 = 1,479,694/x
3. Step 3: Cross multiply
   687,170x = 1,479,694 × 1,479,694
4. Step 4: Simplify right side
   687,170x = 2,189,494,333,636
5. Step 5: Solve for x
   x = 2,189,494,333,636/687,170
6. Step 6: Final answer
   x = 3,186,248.43