Finding the Third Proportional to 404,218.50 and 673,656

Step by Step Solution

1. Step 1: Write the proportion equation
   404,218.50 : 673,656 = 673,656 : x
2. Step 2: Convert to fraction form
   404,218.50/673,656 = 673,656/x
3. Step 3: Cross multiply
   404,218.50x = 673,656 × 673,656
4. Step 4: Simplify right side
   404,218.50x = 453,812,406,336
5. Step 5: Solve for x
   x = 453,812,406,336/404,218.50
6. Step 6: Final answer
   x = 1,122,690.84