Finding the Third Proportional to 51,728 and 76,071

Step by Step Solution

1. Step 1: Write the proportion equation
   51,728 : 76,071 = 76,071 : x
2. Step 2: Convert to fraction form
   51,728/76,071 = 76,071/x
3. Step 3: Cross multiply
   51,728x = 76,071 × 76,071
4. Step 4: Simplify right side
   51,728x = 5,786,797,041
5. Step 5: Solve for x
   x = 5,786,797,041/51,728
6. Step 6: Final answer
   x = 111,869.72