Finding the Third Proportional to 11,151 and 20,706

Step by Step Solution

1. Step 1: Write the proportion equation
   11,151 : 20,706 = 20,706 : x
2. Step 2: Convert to fraction form
   11,151/20,706 = 20,706/x
3. Step 3: Cross multiply
   11,151x = 20,706 × 20,706
4. Step 4: Simplify right side
   11,151x = 428,738,436
5. Step 5: Solve for x
   x = 428,738,436/11,151
6. Step 6: Final answer
   x = 38,448.43