Finding the Third Proportional to 11,121.75 and 20,846.25

Step by Step Solution

1. Step 1: Write the proportion equation
   11,121.75 : 20,846.25 = 20,846.25 : x
2. Step 2: Convert to fraction form
   11,121.75/20,846.25 = 20,846.25/x
3. Step 3: Cross multiply
   11,121.75x = 20,846.25 × 20,846.25
4. Step 4: Simplify right side
   11,121.75x = 434,566,139.06
5. Step 5: Solve for x
   x = 434,566,139.06/11,121.75
6. Step 6: Final answer
   x = 39,073.54