Finding the Third Proportional to 404,276 and 673,738

Step by Step Solution

1. Step 1: Write the proportion equation
   404,276 : 673,738 = 673,738 : x
2. Step 2: Convert to fraction form
   404,276/673,738 = 673,738/x
3. Step 3: Cross multiply
   404,276x = 673,738 × 673,738
4. Step 4: Simplify right side
   404,276x = 453,922,892,644
5. Step 5: Solve for x
   x = 453,922,892,644/404,276
6. Step 6: Final answer
   x = 1,122,804.45