Finding the Third Proportional to 255,322 and 404,104

Step by Step Solution

1. Step 1: Write the proportion equation
   255,322 : 404,104 = 404,104 : x
2. Step 2: Convert to fraction form
   255,322/404,104 = 404,104/x
3. Step 3: Cross multiply
   255,322x = 404,104 × 404,104
4. Step 4: Simplify right side
   255,322x = 163,300,042,816
5. Step 5: Solve for x
   x = 163,300,042,816/255,322
6. Step 6: Final answer
   x = 639,584.69