Finding the Third Proportional to 10,531.27 and 21,806.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,531.27 : 21,806.72 = 21,806.72 : x
2. Step 2: Convert to fraction form
   10,531.27/21,806.72 = 21,806.72/x
3. Step 3: Cross multiply
   10,531.27x = 21,806.72 × 21,806.72
4. Step 4: Simplify right side
   10,531.27x = 475,532,982.64
5. Step 5: Solve for x
   x = 475,532,982.64/10,531.27
6. Step 6: Final answer
   x = 45,154.40