Finding the Third Proportional to 33,721 and 70,911

Step by Step Solution

1. Step 1: Write the proportion equation
   33,721 : 70,911 = 70,911 : x
2. Step 2: Convert to fraction form
   33,721/70,911 = 70,911/x
3. Step 3: Cross multiply
   33,721x = 70,911 × 70,911
4. Step 4: Simplify right side
   33,721x = 5,028,369,921
5. Step 5: Solve for x
   x = 5,028,369,921/33,721
6. Step 6: Final answer
   x = 149,116.87