Finding the Third Proportional to 31,706 and 69,388

Step by Step Solution

1. Step 1: Write the proportion equation
   31,706 : 69,388 = 69,388 : x
2. Step 2: Convert to fraction form
   31,706/69,388 = 69,388/x
3. Step 3: Cross multiply
   31,706x = 69,388 × 69,388
4. Step 4: Simplify right side
   31,706x = 4,814,694,544
5. Step 5: Solve for x
   x = 4,814,694,544/31,706
6. Step 6: Final answer
   x = 151,854.37