Finding the Third Proportional to 449,953 and 978,638

Step by Step Solution

1. Step 1: Write the proportion equation
   449,953 : 978,638 = 978,638 : x
2. Step 2: Convert to fraction form
   449,953/978,638 = 978,638/x
3. Step 3: Cross multiply
   449,953x = 978,638 × 978,638
4. Step 4: Simplify right side
   449,953x = 957,732,335,044
5. Step 5: Solve for x
   x = 957,732,335,044/449,953
6. Step 6: Final answer
   x = 2,128,516.39