Finding the Third Proportional to 20,760 and 31,910

Step by Step Solution

1. Step 1: Write the proportion equation
   20,760 : 31,910 = 31,910 : x
2. Step 2: Convert to fraction form
   20,760/31,910 = 31,910/x
3. Step 3: Cross multiply
   20,760x = 31,910 × 31,910
4. Step 4: Simplify right side
   20,760x = 1,018,248,100
5. Step 5: Solve for x
   x = 1,018,248,100/20,760
6. Step 6: Final answer
   x = 49,048.56