Finding the Third Proportional to 187,443 and 404,820

Step by Step Solution

1. Step 1: Write the proportion equation
   187,443 : 404,820 = 404,820 : x
2. Step 2: Convert to fraction form
   187,443/404,820 = 404,820/x
3. Step 3: Cross multiply
   187,443x = 404,820 × 404,820
4. Step 4: Simplify right side
   187,443x = 163,879,232,400
5. Step 5: Solve for x
   x = 163,879,232,400/187,443
6. Step 6: Final answer
   x = 874,288.36