Finding the Third Proportional to 404,264 and 820,407.25

Step by Step Solution

1. Step 1: Write the proportion equation
   404,264 : 820,407.25 = 820,407.25 : x
2. Step 2: Convert to fraction form
   404,264/820,407.25 = 820,407.25/x
3. Step 3: Cross multiply
   404,264x = 820,407.25 × 820,407.25
4. Step 4: Simplify right side
   404,264x = 673,068,055,852.56
5. Step 5: Solve for x
   x = 673,068,055,852.56/404,264
6. Step 6: Final answer
   x = 1,664,922.07