Finding the Third Proportional to 30,648.50 and 67,039

Step by Step Solution

1. Step 1: Write the proportion equation
   30,648.50 : 67,039 = 67,039 : x
2. Step 2: Convert to fraction form
   30,648.50/67,039 = 67,039/x
3. Step 3: Cross multiply
   30,648.50x = 67,039 × 67,039
4. Step 4: Simplify right side
   30,648.50x = 4,494,227,521
5. Step 5: Solve for x
   x = 4,494,227,521/30,648.50
6. Step 6: Final answer
   x = 146,637.76