Finding the Third Proportional to 31,921 and 50,521

Step by Step Solution

1. Step 1: Write the proportion equation
   31,921 : 50,521 = 50,521 : x
2. Step 2: Convert to fraction form
   31,921/50,521 = 50,521/x
3. Step 3: Cross multiply
   31,921x = 50,521 × 50,521
4. Step 4: Simplify right side
   31,921x = 2,552,371,441
5. Step 5: Solve for x
   x = 2,552,371,441/31,921
6. Step 6: Final answer
   x = 79,959.01