Finding the Third Proportional to 5,638.50 and 10,863

Step by Step Solution

1. Step 1: Write the proportion equation
   5,638.50 : 10,863 = 10,863 : x
2. Step 2: Convert to fraction form
   5,638.50/10,863 = 10,863/x
3. Step 3: Cross multiply
   5,638.50x = 10,863 × 10,863
4. Step 4: Simplify right side
   5,638.50x = 118,004,769
5. Step 5: Solve for x
   x = 118,004,769/5,638.50
6. Step 6: Final answer
   x = 20,928.40