Finding the Third Proportional to 687,168 and 1,479,690

Step by Step Solution

1. Step 1: Write the proportion equation
   687,168 : 1,479,690 = 1,479,690 : x
2. Step 2: Convert to fraction form
   687,168/1,479,690 = 1,479,690/x
3. Step 3: Cross multiply
   687,168x = 1,479,690 × 1,479,690
4. Step 4: Simplify right side
   687,168x = 2,189,482,496,100
5. Step 5: Solve for x
   x = 2,189,482,496,100/687,168
6. Step 6: Final answer
   x = 3,186,240.48