Finding the Third Proportional to 20,808 and 31,910.63

Step by Step Solution

1. Step 1: Write the proportion equation
   20,808 : 31,910.63 = 31,910.63 : x
2. Step 2: Convert to fraction form
   20,808/31,910.63 = 31,910.63/x
3. Step 3: Cross multiply
   20,808x = 31,910.63 × 31,910.63
4. Step 4: Simplify right side
   20,808x = 1,018,287,987.89
5. Step 5: Solve for x
   x = 1,018,287,987.89/20,808
6. Step 6: Final answer
   x = 48,937.33