Finding the Third Proportional to 13,164 and 20,388

Step by Step Solution

1. Step 1: Write the proportion equation
   13,164 : 20,388 = 20,388 : x
2. Step 2: Convert to fraction form
   13,164/20,388 = 20,388/x
3. Step 3: Cross multiply
   13,164x = 20,388 × 20,388
4. Step 4: Simplify right side
   13,164x = 415,670,544
5. Step 5: Solve for x
   x = 415,670,544/13,164
6. Step 6: Final answer
   x = 31,576.31