Finding the Third Proportional to 31,212 and 50,707

Step by Step Solution

1. Step 1: Write the proportion equation
   31,212 : 50,707 = 50,707 : x
2. Step 2: Convert to fraction form
   31,212/50,707 = 50,707/x
3. Step 3: Cross multiply
   31,212x = 50,707 × 50,707
4. Step 4: Simplify right side
   31,212x = 2,571,199,849
5. Step 5: Solve for x
   x = 2,571,199,849/31,212
6. Step 6: Final answer
   x = 82,378.57