Finding the Third Proportional to 15,208.31 and 20,343.38

Step by Step Solution

1. Step 1: Write the proportion equation
   15,208.31 : 20,343.38 = 20,343.38 : x
2. Step 2: Convert to fraction form
   15,208.31/20,343.38 = 20,343.38/x
3. Step 3: Cross multiply
   15,208.31x = 20,343.38 × 20,343.38
4. Step 4: Simplify right side
   15,208.31x = 413,852,906.39
5. Step 5: Solve for x
   x = 413,852,906.39/15,208.31
6. Step 6: Final answer
   x = 27,212.28