Finding the Third Proportional to 419,413.50 and 912,555

Step by Step Solution

1. Step 1: Write the proportion equation
   419,413.50 : 912,555 = 912,555 : x
2. Step 2: Convert to fraction form
   419,413.50/912,555 = 912,555/x
3. Step 3: Cross multiply
   419,413.50x = 912,555 × 912,555
4. Step 4: Simplify right side
   419,413.50x = 832,756,628,025
5. Step 5: Solve for x
   x = 832,756,628,025/419,413.50
6. Step 6: Final answer
   x = 1,985,526.52