Finding the Third Proportional to 20,520 and 31,868

Step by Step Solution

1. Step 1: Write the proportion equation
   20,520 : 31,868 = 31,868 : x
2. Step 2: Convert to fraction form
   20,520/31,868 = 31,868/x
3. Step 3: Cross multiply
   20,520x = 31,868 × 31,868
4. Step 4: Simplify right side
   20,520x = 1,015,569,424
5. Step 5: Solve for x
   x = 1,015,569,424/20,520
6. Step 6: Final answer
   x = 49,491.69