Finding the Third Proportional to 187,436 and 404,397

Step by Step Solution

1. Step 1: Write the proportion equation
   187,436 : 404,397 = 404,397 : x
2. Step 2: Convert to fraction form
   187,436/404,397 = 404,397/x
3. Step 3: Cross multiply
   187,436x = 404,397 × 404,397
4. Step 4: Simplify right side
   187,436x = 163,536,933,609
5. Step 5: Solve for x
   x = 163,536,933,609/187,436
6. Step 6: Final answer
   x = 872,494.79