Finding the Third Proportional to 450,665 and 978,360

Step by Step Solution

1. Step 1: Write the proportion equation
   450,665 : 978,360 = 978,360 : x
2. Step 2: Convert to fraction form
   450,665/978,360 = 978,360/x
3. Step 3: Cross multiply
   450,665x = 978,360 × 978,360
4. Step 4: Simplify right side
   450,665x = 957,188,289,600
5. Step 5: Solve for x
   x = 957,188,289,600/450,665
6. Step 6: Final answer
   x = 2,123,946.37