Finding the Third Proportional to 16,620 and 36,144

Step by Step Solution

1. Step 1: Write the proportion equation
   16,620 : 36,144 = 36,144 : x
2. Step 2: Convert to fraction form
   16,620/36,144 = 36,144/x
3. Step 3: Cross multiply
   16,620x = 36,144 × 36,144
4. Step 4: Simplify right side
   16,620x = 1,306,388,736
5. Step 5: Solve for x
   x = 1,306,388,736/16,620
6. Step 6: Final answer
   x = 78,603.41