Finding the Third Proportional to 442,682 and 978,398

Step by Step Solution

1. Step 1: Write the proportion equation
   442,682 : 978,398 = 978,398 : x
2. Step 2: Convert to fraction form
   442,682/978,398 = 978,398/x
3. Step 3: Cross multiply
   442,682x = 978,398 × 978,398
4. Step 4: Simplify right side
   442,682x = 957,262,646,404
5. Step 5: Solve for x
   x = 957,262,646,404/442,682
6. Step 6: Final answer
   x = 2,162,416.02