Finding the Third Proportional to 31,040 and 67,000

Step by Step Solution

1. Step 1: Write the proportion equation
   31,040 : 67,000 = 67,000 : x
2. Step 2: Convert to fraction form
   31,040/67,000 = 67,000/x
3. Step 3: Cross multiply
   31,040x = 67,000 × 67,000
4. Step 4: Simplify right side
   31,040x = 4,489,000,000
5. Step 5: Solve for x
   x = 4,489,000,000/31,040
6. Step 6: Final answer
   x = 144,619.85