Finding the Third Proportional to 21,991.50 and 33,777

Step by Step Solution

1. Step 1: Write the proportion equation
   21,991.50 : 33,777 = 33,777 : x
2. Step 2: Convert to fraction form
   21,991.50/33,777 = 33,777/x
3. Step 3: Cross multiply
   21,991.50x = 33,777 × 33,777
4. Step 4: Simplify right side
   21,991.50x = 1,140,885,729
5. Step 5: Solve for x
   x = 1,140,885,729/21,991.50
6. Step 6: Final answer
   x = 51,878.49