Finding the Third Proportional to 449,638.50 and 978,576

Step by Step Solution

1. Step 1: Write the proportion equation
   449,638.50 : 978,576 = 978,576 : x
2. Step 2: Convert to fraction form
   449,638.50/978,576 = 978,576/x
3. Step 3: Cross multiply
   449,638.50x = 978,576 × 978,576
4. Step 4: Simplify right side
   449,638.50x = 957,610,987,776
5. Step 5: Solve for x
   x = 957,610,987,776/449,638.50
6. Step 6: Final answer
   x = 2,129,735.30