Finding the Third Proportional to 442,714 and 978,456

Step by Step Solution

1. Step 1: Write the proportion equation
   442,714 : 978,456 = 978,456 : x
2. Step 2: Convert to fraction form
   442,714/978,456 = 978,456/x
3. Step 3: Cross multiply
   442,714x = 978,456 × 978,456
4. Step 4: Simplify right side
   442,714x = 957,376,143,936
5. Step 5: Solve for x
   x = 957,376,143,936/442,714
6. Step 6: Final answer
   x = 2,162,516.08