Finding the Third Proportional to 449,651 and 978,619

Step by Step Solution

1. Step 1: Write the proportion equation
   449,651 : 978,619 = 978,619 : x
2. Step 2: Convert to fraction form
   449,651/978,619 = 978,619/x
3. Step 3: Cross multiply
   449,651x = 978,619 × 978,619
4. Step 4: Simplify right side
   449,651x = 957,695,147,161
5. Step 5: Solve for x
   x = 957,695,147,161/449,651
6. Step 6: Final answer
   x = 2,129,863.27