Finding the Third Proportional to 143,048 and 216,413.50

Step by Step Solution

1. Step 1: Write the proportion equation
   143,048 : 216,413.50 = 216,413.50 : x
2. Step 2: Convert to fraction form
   143,048/216,413.50 = 216,413.50/x
3. Step 3: Cross multiply
   143,048x = 216,413.50 × 216,413.50
4. Step 4: Simplify right side
   143,048x = 46,834,802,982.25
5. Step 5: Solve for x
   x = 46,834,802,982.25/143,048
6. Step 6: Final answer
   x = 327,406.21