Finding the Third Proportional to 444,860 and 978,280

Step by Step Solution

1. Step 1: Write the proportion equation
   444,860 : 978,280 = 978,280 : x
2. Step 2: Convert to fraction form
   444,860/978,280 = 978,280/x
3. Step 3: Cross multiply
   444,860x = 978,280 × 978,280
4. Step 4: Simplify right side
   444,860x = 957,031,758,400
5. Step 5: Solve for x
   x = 957,031,758,400/444,860
6. Step 6: Final answer
   x = 2,151,309.98