Finding the Third Proportional to 31,571 and 69,703

Step by Step Solution

1. Step 1: Write the proportion equation
   31,571 : 69,703 = 69,703 : x
2. Step 2: Convert to fraction form
   31,571/69,703 = 69,703/x
3. Step 3: Cross multiply
   31,571x = 69,703 × 69,703
4. Step 4: Simplify right side
   31,571x = 4,858,508,209
5. Step 5: Solve for x
   x = 4,858,508,209/31,571
6. Step 6: Final answer
   x = 153,891.49