Finding the Third Proportional to 21,106.25 and 33,420.75

Step by Step Solution

1. Step 1: Write the proportion equation
   21,106.25 : 33,420.75 = 33,420.75 : x
2. Step 2: Convert to fraction form
   21,106.25/33,420.75 = 33,420.75/x
3. Step 3: Cross multiply
   21,106.25x = 33,420.75 × 33,420.75
4. Step 4: Simplify right side
   21,106.25x = 1,116,946,530.56
5. Step 5: Solve for x
   x = 1,116,946,530.56/21,106.25
6. Step 6: Final answer
   x = 52,920.18