Finding the Third Proportional to 13,236.75 and 20,118.38

Step by Step Solution

1. Step 1: Write the proportion equation
   13,236.75 : 20,118.38 = 20,118.38 : x
2. Step 2: Convert to fraction form
   13,236.75/20,118.38 = 20,118.38/x
3. Step 3: Cross multiply
   13,236.75x = 20,118.38 × 20,118.38
4. Step 4: Simplify right side
   13,236.75x = 404,749,012.64
5. Step 5: Solve for x
   x = 404,749,012.64/13,236.75
6. Step 6: Final answer
   x = 30,577.67