Finding the Third Proportional to 188,904 and 388,885

Step by Step Solution

1. Step 1: Write the proportion equation
   188,904 : 388,885 = 388,885 : x
2. Step 2: Convert to fraction form
   188,904/388,885 = 388,885/x
3. Step 3: Cross multiply
   188,904x = 388,885 × 388,885
4. Step 4: Simplify right side
   188,904x = 151,231,543,225
5. Step 5: Solve for x
   x = 151,231,543,225/188,904
6. Step 6: Final answer
   x = 800,573.54