Finding the Third Proportional to 449,969 and 978,670

Step by Step Solution

1. Step 1: Write the proportion equation
   449,969 : 978,670 = 978,670 : x
2. Step 2: Convert to fraction form
   449,969/978,670 = 978,670/x
3. Step 3: Cross multiply
   449,969x = 978,670 × 978,670
4. Step 4: Simplify right side
   449,969x = 957,794,968,900
5. Step 5: Solve for x
   x = 957,794,968,900/449,969
6. Step 6: Final answer
   x = 2,128,579.90