Finding the Third Proportional to 7,172 and 10,805

Step by Step Solution

1. Step 1: Write the proportion equation
   7,172 : 10,805 = 10,805 : x
2. Step 2: Convert to fraction form
   7,172/10,805 = 10,805/x
3. Step 3: Cross multiply
   7,172x = 10,805 × 10,805
4. Step 4: Simplify right side
   7,172x = 116,748,025
5. Step 5: Solve for x
   x = 116,748,025/7,172
6. Step 6: Final answer
   x = 16,278.31