Finding the Third Proportional to 10,722 and 11,706

Step by Step Solution

1. Step 1: Write the proportion equation
   10,722 : 11,706 = 11,706 : x
2. Step 2: Convert to fraction form
   10,722/11,706 = 11,706/x
3. Step 3: Cross multiply
   10,722x = 11,706 × 11,706
4. Step 4: Simplify right side
   10,722x = 137,030,436
5. Step 5: Solve for x
   x = 137,030,436/10,722
6. Step 6: Final answer
   x = 12,780.31