Finding the Third Proportional to 60,732 and 128,388

Step by Step Solution

1. Step 1: Write the proportion equation
   60,732 : 128,388 = 128,388 : x
2. Step 2: Convert to fraction form
   60,732/128,388 = 128,388/x
3. Step 3: Cross multiply
   60,732x = 128,388 × 128,388
4. Step 4: Simplify right side
   60,732x = 16,483,478,544
5. Step 5: Solve for x
   x = 16,483,478,544/60,732
6. Step 6: Final answer
   x = 271,413.40