Finding the Third Proportional to 31,078.50 and 67,071

Step by Step Solution

1. Step 1: Write the proportion equation
   31,078.50 : 67,071 = 67,071 : x
2. Step 2: Convert to fraction form
   31,078.50/67,071 = 67,071/x
3. Step 3: Cross multiply
   31,078.50x = 67,071 × 67,071
4. Step 4: Simplify right side
   31,078.50x = 4,498,519,041
5. Step 5: Solve for x
   x = 4,498,519,041/31,078.50
6. Step 6: Final answer
   x = 144,746.98