Finding the Third Proportional to 404,190 and 673,611.75

Step by Step Solution

1. Step 1: Write the proportion equation
   404,190 : 673,611.75 = 673,611.75 : x
2. Step 2: Convert to fraction form
   404,190/673,611.75 = 673,611.75/x
3. Step 3: Cross multiply
   404,190x = 673,611.75 × 673,611.75
4. Step 4: Simplify right side
   404,190x = 453,752,789,738.06
5. Step 5: Solve for x
   x = 453,752,789,738.06/404,190
6. Step 6: Final answer
   x = 1,122,622.50