Finding the Third Proportional to 13,015 and 20,144

Step by Step Solution

1. Step 1: Write the proportion equation
   13,015 : 20,144 = 20,144 : x
2. Step 2: Convert to fraction form
   13,015/20,144 = 20,144/x
3. Step 3: Cross multiply
   13,015x = 20,144 × 20,144
4. Step 4: Simplify right side
   13,015x = 405,780,736
5. Step 5: Solve for x
   x = 405,780,736/13,015
6. Step 6: Final answer
   x = 31,177.93