Finding the Third Proportional to 442,755 and 978,540

Step by Step Solution

1. Step 1: Write the proportion equation
   442,755 : 978,540 = 978,540 : x
2. Step 2: Convert to fraction form
   442,755/978,540 = 978,540/x
3. Step 3: Cross multiply
   442,755x = 978,540 × 978,540
4. Step 4: Simplify right side
   442,755x = 957,540,531,600
5. Step 5: Solve for x
   x = 957,540,531,600/442,755
6. Step 6: Final answer
   x = 2,162,687.11