Finding the Third Proportional to 31,082 and 67,144

Step by Step Solution

1. Step 1: Write the proportion equation
   31,082 : 67,144 = 67,144 : x
2. Step 2: Convert to fraction form
   31,082/67,144 = 67,144/x
3. Step 3: Cross multiply
   31,082x = 67,144 × 67,144
4. Step 4: Simplify right side
   31,082x = 4,508,316,736
5. Step 5: Solve for x
   x = 4,508,316,736/31,082
6. Step 6: Final answer
   x = 145,045.90