Finding the Third Proportional to 424,890 and 919,480.50

Step by Step Solution

1. Step 1: Write the proportion equation
   424,890 : 919,480.50 = 919,480.50 : x
2. Step 2: Convert to fraction form
   424,890/919,480.50 = 919,480.50/x
3. Step 3: Cross multiply
   424,890x = 919,480.50 × 919,480.50
4. Step 4: Simplify right side
   424,890x = 845,444,389,880.25
5. Step 5: Solve for x
   x = 845,444,389,880.25/424,890
6. Step 6: Final answer
   x = 1,989,795.92