Finding the Third Proportional to 424,938 and 978,612

Step by Step Solution

1. Step 1: Write the proportion equation
   424,938 : 978,612 = 978,612 : x
2. Step 2: Convert to fraction form
   424,938/978,612 = 978,612/x
3. Step 3: Cross multiply
   424,938x = 978,612 × 978,612
4. Step 4: Simplify right side
   424,938x = 957,681,446,544
5. Step 5: Solve for x
   x = 957,681,446,544/424,938
6. Step 6: Final answer
   x = 2,253,696.88