Finding the Third Proportional to 31,866 and 68,070

Step by Step Solution

1. Step 1: Write the proportion equation
   31,866 : 68,070 = 68,070 : x
2. Step 2: Convert to fraction form
   31,866/68,070 = 68,070/x
3. Step 3: Cross multiply
   31,866x = 68,070 × 68,070
4. Step 4: Simplify right side
   31,866x = 4,633,524,900
5. Step 5: Solve for x
   x = 4,633,524,900/31,866
6. Step 6: Final answer
   x = 145,406.54