Finding the Third Proportional to 9,843.75 and 21,143.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,843.75 : 21,143.25 = 21,143.25 : x
2. Step 2: Convert to fraction form
   9,843.75/21,143.25 = 21,143.25/x
3. Step 3: Cross multiply
   9,843.75x = 21,143.25 × 21,143.25
4. Step 4: Simplify right side
   9,843.75x = 447,037,020.56
5. Step 5: Solve for x
   x = 447,037,020.56/9,843.75
6. Step 6: Final answer
   x = 45,413.28