Finding the Third Proportional to 188,422 and 404,144

Step by Step Solution

1. Step 1: Write the proportion equation
   188,422 : 404,144 = 404,144 : x
2. Step 2: Convert to fraction form
   188,422/404,144 = 404,144/x
3. Step 3: Cross multiply
   188,422x = 404,144 × 404,144
4. Step 4: Simplify right side
   188,422x = 163,332,372,736
5. Step 5: Solve for x
   x = 163,332,372,736/188,422
6. Step 6: Final answer
   x = 866,843.43