Finding the Third Proportional to 30,747.09 and 67,242.66

Step by Step Solution

1. Step 1: Write the proportion equation
   30,747.09 : 67,242.66 = 67,242.66 : x
2. Step 2: Convert to fraction form
   30,747.09/67,242.66 = 67,242.66/x
3. Step 3: Cross multiply
   30,747.09x = 67,242.66 × 67,242.66
4. Step 4: Simplify right side
   30,747.09x = 4,521,574,819.56
5. Step 5: Solve for x
   x = 4,521,574,819.56/30,747.09
6. Step 6: Final answer
   x = 147,056.98