Finding the Third Proportional to 442,716 and 978,460

Step by Step Solution

1. Step 1: Write the proportion equation
   442,716 : 978,460 = 978,460 : x
2. Step 2: Convert to fraction form
   442,716/978,460 = 978,460/x
3. Step 3: Cross multiply
   442,716x = 978,460 × 978,460
4. Step 4: Simplify right side
   442,716x = 957,383,971,600
5. Step 5: Solve for x
   x = 957,383,971,600/442,716
6. Step 6: Final answer
   x = 2,162,523.99