Finding the Third Proportional to 449,398 and 978,136

Step by Step Solution

1. Step 1: Write the proportion equation
   449,398 : 978,136 = 978,136 : x
2. Step 2: Convert to fraction form
   449,398/978,136 = 978,136/x
3. Step 3: Cross multiply
   449,398x = 978,136 × 978,136
4. Step 4: Simplify right side
   449,398x = 956,750,034,496
5. Step 5: Solve for x
   x = 956,750,034,496/449,398
6. Step 6: Final answer
   x = 2,128,959.26