Finding the Third Proportional to 255,332 and 404,118

Step by Step Solution

1. Step 1: Write the proportion equation
   255,332 : 404,118 = 404,118 : x
2. Step 2: Convert to fraction form
   255,332/404,118 = 404,118/x
3. Step 3: Cross multiply
   255,332x = 404,118 × 404,118
4. Step 4: Simplify right side
   255,332x = 163,311,357,924
5. Step 5: Solve for x
   x = 163,311,357,924/255,332
6. Step 6: Final answer
   x = 639,603.96