Finding the Third Proportional to 13,721.75 and 20,492.38

Step by Step Solution

1. Step 1: Write the proportion equation
   13,721.75 : 20,492.38 = 20,492.38 : x
2. Step 2: Convert to fraction form
   13,721.75/20,492.38 = 20,492.38/x
3. Step 3: Cross multiply
   13,721.75x = 20,492.38 × 20,492.38
4. Step 4: Simplify right side
   13,721.75x = 419,937,433.14
5. Step 5: Solve for x
   x = 419,937,433.14/13,721.75
6. Step 6: Final answer
   x = 30,603.78