Finding the Third Proportional to 40,390 and 67,082

Step by Step Solution

1. Step 1: Write the proportion equation
   40,390 : 67,082 = 67,082 : x
2. Step 2: Convert to fraction form
   40,390/67,082 = 67,082/x
3. Step 3: Cross multiply
   40,390x = 67,082 × 67,082
4. Step 4: Simplify right side
   40,390x = 4,499,994,724
5. Step 5: Solve for x
   x = 4,499,994,724/40,390
6. Step 6: Final answer
   x = 111,413.59