Finding the Third Proportional to 187,438 and 404,814

Step by Step Solution

1. Step 1: Write the proportion equation
   187,438 : 404,814 = 404,814 : x
2. Step 2: Convert to fraction form
   187,438/404,814 = 404,814/x
3. Step 3: Cross multiply
   187,438x = 404,814 × 404,814
4. Step 4: Simplify right side
   187,438x = 163,874,374,596
5. Step 5: Solve for x
   x = 163,874,374,596/187,438
6. Step 6: Final answer
   x = 874,285.76