Finding the Third Proportional to 449,911 and 978,554

Step by Step Solution

1. Step 1: Write the proportion equation
   449,911 : 978,554 = 978,554 : x
2. Step 2: Convert to fraction form
   449,911/978,554 = 978,554/x
3. Step 3: Cross multiply
   449,911x = 978,554 × 978,554
4. Step 4: Simplify right side
   449,911x = 957,567,930,916
5. Step 5: Solve for x
   x = 957,567,930,916/449,911
6. Step 6: Final answer
   x = 2,128,349.68