Finding the Third Proportional to 449,633 and 978,583

Step by Step Solution

1. Step 1: Write the proportion equation
   449,633 : 978,583 = 978,583 : x
2. Step 2: Convert to fraction form
   449,633/978,583 = 978,583/x
3. Step 3: Cross multiply
   449,633x = 978,583 × 978,583
4. Step 4: Simplify right side
   449,633x = 957,624,687,889
5. Step 5: Solve for x
   x = 957,624,687,889/449,633
6. Step 6: Final answer
   x = 2,129,791.83