Finding the Third Proportional to 449,666 and 978,648

Step by Step Solution

1. Step 1: Write the proportion equation
   449,666 : 978,648 = 978,648 : x
2. Step 2: Convert to fraction form
   449,666/978,648 = 978,648/x
3. Step 3: Cross multiply
   449,666x = 978,648 × 978,648
4. Step 4: Simplify right side
   449,666x = 957,751,907,904
5. Step 5: Solve for x
   x = 957,751,907,904/449,666
6. Step 6: Final answer
   x = 2,129,918.45