Finding the Third Proportional to 21,577.88 and 33,121.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,577.88 : 33,121.50 = 33,121.50 : x
2. Step 2: Convert to fraction form
   21,577.88/33,121.50 = 33,121.50/x
3. Step 3: Cross multiply
   21,577.88x = 33,121.50 × 33,121.50
4. Step 4: Simplify right side
   21,577.88x = 1,097,033,762.25
5. Step 5: Solve for x
   x = 1,097,033,762.25/21,577.88
6. Step 6: Final answer
   x = 50,840.68