Finding the Third Proportional to 31,579 and 67,836

Step by Step Solution

1. Step 1: Write the proportion equation
   31,579 : 67,836 = 67,836 : x
2. Step 2: Convert to fraction form
   31,579/67,836 = 67,836/x
3. Step 3: Cross multiply
   31,579x = 67,836 × 67,836
4. Step 4: Simplify right side
   31,579x = 4,601,722,896
5. Step 5: Solve for x
   x = 4,601,722,896/31,579
6. Step 6: Final answer
   x = 145,720.98