Finding the Third Proportional to 442,720 and 978,468

Step by Step Solution

1. Step 1: Write the proportion equation
   442,720 : 978,468 = 978,468 : x
2. Step 2: Convert to fraction form
   442,720/978,468 = 978,468/x
3. Step 3: Cross multiply
   442,720x = 978,468 × 978,468
4. Step 4: Simplify right side
   442,720x = 957,399,627,024
5. Step 5: Solve for x
   x = 957,399,627,024/442,720
6. Step 6: Final answer
   x = 2,162,539.82