Finding the Third Proportional to 404,218.69 and 673,656.75

Step by Step Solution

1. Step 1: Write the proportion equation
   404,218.69 : 673,656.75 = 673,656.75 : x
2. Step 2: Convert to fraction form
   404,218.69/673,656.75 = 673,656.75/x
3. Step 3: Cross multiply
   404,218.69x = 673,656.75 × 673,656.75
4. Step 4: Simplify right side
   404,218.69x = 453,813,416,820.56
5. Step 5: Solve for x
   x = 453,813,416,820.56/404,218.69
6. Step 6: Final answer
   x = 1,122,692.82