Finding the Third Proportional to 13,911.75 and 20,882.81

Step by Step Solution

1. Step 1: Write the proportion equation
   13,911.75 : 20,882.81 = 20,882.81 : x
2. Step 2: Convert to fraction form
   13,911.75/20,882.81 = 20,882.81/x
3. Step 3: Cross multiply
   13,911.75x = 20,882.81 × 20,882.81
4. Step 4: Simplify right side
   13,911.75x = 436,091,857.91
5. Step 5: Solve for x
   x = 436,091,857.91/13,911.75
6. Step 6: Final answer
   x = 31,347.02