Finding the Third Proportional to 31,020 and 67,836

Step by Step Solution

1. Step 1: Write the proportion equation
   31,020 : 67,836 = 67,836 : x
2. Step 2: Convert to fraction form
   31,020/67,836 = 67,836/x
3. Step 3: Cross multiply
   31,020x = 67,836 × 67,836
4. Step 4: Simplify right side
   31,020x = 4,601,722,896
5. Step 5: Solve for x
   x = 4,601,722,896/31,020
6. Step 6: Final answer
   x = 148,346.97