Finding the Third Proportional to 443,920 and 978,324

Step by Step Solution

1. Step 1: Write the proportion equation
   443,920 : 978,324 = 978,324 : x
2. Step 2: Convert to fraction form
   443,920/978,324 = 978,324/x
3. Step 3: Cross multiply
   443,920x = 978,324 × 978,324
4. Step 4: Simplify right side
   443,920x = 957,117,848,976
5. Step 5: Solve for x
   x = 957,117,848,976/443,920
6. Step 6: Final answer
   x = 2,156,059.31