Finding the Third Proportional to 31,378 and 67,304

Step by Step Solution

1. Step 1: Write the proportion equation
   31,378 : 67,304 = 67,304 : x
2. Step 2: Convert to fraction form
   31,378/67,304 = 67,304/x
3. Step 3: Cross multiply
   31,378x = 67,304 × 67,304
4. Step 4: Simplify right side
   31,378x = 4,529,828,416
5. Step 5: Solve for x
   x = 4,529,828,416/31,378
6. Step 6: Final answer
   x = 144,363.20