Finding the Third Proportional to 442,711 and 978,451

Step by Step Solution

1. Step 1: Write the proportion equation
   442,711 : 978,451 = 978,451 : x
2. Step 2: Convert to fraction form
   442,711/978,451 = 978,451/x
3. Step 3: Cross multiply
   442,711x = 978,451 × 978,451
4. Step 4: Simplify right side
   442,711x = 957,366,359,401
5. Step 5: Solve for x
   x = 957,366,359,401/442,711
6. Step 6: Final answer
   x = 2,162,508.63