Finding the Third Proportional to 33,109.31 and 71,717.91

Step by Step Solution

1. Step 1: Write the proportion equation
   33,109.31 : 71,717.91 = 71,717.91 : x
2. Step 2: Convert to fraction form
   33,109.31/71,717.91 = 71,717.91/x
3. Step 3: Cross multiply
   33,109.31x = 71,717.91 × 71,717.91
4. Step 4: Simplify right side
   33,109.31x = 5,143,458,076.88
5. Step 5: Solve for x
   x = 5,143,458,076.88/33,109.31
6. Step 6: Final answer
   x = 155,347.78