Finding the Third Proportional to 187,717 and 404,774

Step by Step Solution

1. Step 1: Write the proportion equation
   187,717 : 404,774 = 404,774 : x
2. Step 2: Convert to fraction form
   187,717/404,774 = 404,774/x
3. Step 3: Cross multiply
   187,717x = 404,774 × 404,774
4. Step 4: Simplify right side
   187,717x = 163,841,991,076
5. Step 5: Solve for x
   x = 163,841,991,076/187,717
6. Step 6: Final answer
   x = 872,813.82