Finding the Third Proportional to 31,348 and 67,069

Step by Step Solution

1. Step 1: Write the proportion equation
   31,348 : 67,069 = 67,069 : x
2. Step 2: Convert to fraction form
   31,348/67,069 = 67,069/x
3. Step 3: Cross multiply
   31,348x = 67,069 × 67,069
4. Step 4: Simplify right side
   31,348x = 4,498,250,761
5. Step 5: Solve for x
   x = 4,498,250,761/31,348
6. Step 6: Final answer
   x = 143,494.03