Finding the Third Proportional to 18,443.25 and 20,103.75

Step by Step Solution

1. Step 1: Write the proportion equation
   18,443.25 : 20,103.75 = 20,103.75 : x
2. Step 2: Convert to fraction form
   18,443.25/20,103.75 = 20,103.75/x
3. Step 3: Cross multiply
   18,443.25x = 20,103.75 × 20,103.75
4. Step 4: Simplify right side
   18,443.25x = 404,160,764.06
5. Step 5: Solve for x
   x = 404,160,764.06/18,443.25
6. Step 6: Final answer
   x = 21,913.75