Finding the Third Proportional to 31,371 and 67,104

Step by Step Solution

1. Step 1: Write the proportion equation
   31,371 : 67,104 = 67,104 : x
2. Step 2: Convert to fraction form
   31,371/67,104 = 67,104/x
3. Step 3: Cross multiply
   31,371x = 67,104 × 67,104
4. Step 4: Simplify right side
   31,371x = 4,502,946,816
5. Step 5: Solve for x
   x = 4,502,946,816/31,371
6. Step 6: Final answer
   x = 143,538.52