Finding the Third Proportional to 39,662 and 54,388

Step by Step Solution

1. Step 1: Write the proportion equation
   39,662 : 54,388 = 54,388 : x
2. Step 2: Convert to fraction form
   39,662/54,388 = 54,388/x
3. Step 3: Cross multiply
   39,662x = 54,388 × 54,388
4. Step 4: Simplify right side
   39,662x = 2,958,054,544
5. Step 5: Solve for x
   x = 2,958,054,544/39,662
6. Step 6: Final answer
   x = 74,581.58