Finding the Third Proportional to 667,720 and 1,479,540

Step by Step Solution

1. Step 1: Write the proportion equation
   667,720 : 1,479,540 = 1,479,540 : x
2. Step 2: Convert to fraction form
   667,720/1,479,540 = 1,479,540/x
3. Step 3: Cross multiply
   667,720x = 1,479,540 × 1,479,540
4. Step 4: Simplify right side
   667,720x = 2,189,038,611,600
5. Step 5: Solve for x
   x = 2,189,038,611,600/667,720
6. Step 6: Final answer
   x = 3,278,378.08