Finding the Third Proportional to 398,108 and 874,936

Step by Step Solution

1. Step 1: Write the proportion equation
   398,108 : 874,936 = 874,936 : x
2. Step 2: Convert to fraction form
   398,108/874,936 = 874,936/x
3. Step 3: Cross multiply
   398,108x = 874,936 × 874,936
4. Step 4: Simplify right side
   398,108x = 765,513,004,096
5. Step 5: Solve for x
   x = 765,513,004,096/398,108
6. Step 6: Final answer
   x = 1,922,877.72