Finding the Third Proportional to 187,241 and 287,118

Step by Step Solution

1. Step 1: Write the proportion equation
   187,241 : 287,118 = 287,118 : x
2. Step 2: Convert to fraction form
   187,241/287,118 = 287,118/x
3. Step 3: Cross multiply
   187,241x = 287,118 × 287,118
4. Step 4: Simplify right side
   187,241x = 82,436,745,924
5. Step 5: Solve for x
   x = 82,436,745,924/187,241
6. Step 6: Final answer
   x = 440,270.81