Finding the Third Proportional to 442,705 and 978,439

Step by Step Solution

1. Step 1: Write the proportion equation
   442,705 : 978,439 = 978,439 : x
2. Step 2: Convert to fraction form
   442,705/978,439 = 978,439/x
3. Step 3: Cross multiply
   442,705x = 978,439 × 978,439
4. Step 4: Simplify right side
   442,705x = 957,342,876,721
5. Step 5: Solve for x
   x = 957,342,876,721/442,705
6. Step 6: Final answer
   x = 2,162,484.90