Finding the Third Proportional to 501,976 and 978,728

Step by Step Solution

1. Step 1: Write the proportion equation
   501,976 : 978,728 = 978,728 : x
2. Step 2: Convert to fraction form
   501,976/978,728 = 978,728/x
3. Step 3: Cross multiply
   501,976x = 978,728 × 978,728
4. Step 4: Simplify right side
   501,976x = 957,908,497,984
5. Step 5: Solve for x
   x = 957,908,497,984/501,976
6. Step 6: Final answer
   x = 1,908,275.49