Finding the Third Proportional to 449,963 and 978,658

Step by Step Solution

1. Step 1: Write the proportion equation
   449,963 : 978,658 = 978,658 : x
2. Step 2: Convert to fraction form
   449,963/978,658 = 978,658/x
3. Step 3: Cross multiply
   449,963x = 978,658 × 978,658
4. Step 4: Simplify right side
   449,963x = 957,771,480,964
5. Step 5: Solve for x
   x = 957,771,480,964/449,963
6. Step 6: Final answer
   x = 2,128,556.08