Finding the Third Proportional to 33,421.50 and 72,105

Step by Step Solution

1. Step 1: Write the proportion equation
   33,421.50 : 72,105 = 72,105 : x
2. Step 2: Convert to fraction form
   33,421.50/72,105 = 72,105/x
3. Step 3: Cross multiply
   33,421.50x = 72,105 × 72,105
4. Step 4: Simplify right side
   33,421.50x = 5,199,131,025
5. Step 5: Solve for x
   x = 5,199,131,025/33,421.50
6. Step 6: Final answer
   x = 155,562.47