Finding the Third Proportional to 4,311.81 and 9,413.38

Step by Step Solution

1. Step 1: Write the proportion equation
   4,311.81 : 9,413.38 = 9,413.38 : x
2. Step 2: Convert to fraction form
   4,311.81/9,413.38 = 9,413.38/x
3. Step 3: Cross multiply
   4,311.81x = 9,413.38 × 9,413.38
4. Step 4: Simplify right side
   4,311.81x = 88,611,628.89
5. Step 5: Solve for x
   x = 88,611,628.89/4,311.81
6. Step 6: Final answer
   x = 20,550.90