Finding the Third Proportional to 979,720 and 1,386,684

Step by Step Solution

1. Step 1: Write the proportion equation
   979,720 : 1,386,684 = 1,386,684 : x
2. Step 2: Convert to fraction form
   979,720/1,386,684 = 1,386,684/x
3. Step 3: Cross multiply
   979,720x = 1,386,684 × 1,386,684
4. Step 4: Simplify right side
   979,720x = 1,922,892,515,856
5. Step 5: Solve for x
   x = 1,922,892,515,856/979,720
6. Step 6: Final answer
   x = 1,962,695.99