Finding the Third Proportional to 21,309.75 and 33,429

Step by Step Solution

1. Step 1: Write the proportion equation
   21,309.75 : 33,429 = 33,429 : x
2. Step 2: Convert to fraction form
   21,309.75/33,429 = 33,429/x
3. Step 3: Cross multiply
   21,309.75x = 33,429 × 33,429
4. Step 4: Simplify right side
   21,309.75x = 1,117,498,041
5. Step 5: Solve for x
   x = 1,117,498,041/21,309.75
6. Step 6: Final answer
   x = 52,440.69