Finding the Third Proportional to 21,120.75 and 31,757.06

Step by Step Solution

1. Step 1: Write the proportion equation
   21,120.75 : 31,757.06 = 31,757.06 : x
2. Step 2: Convert to fraction form
   21,120.75/31,757.06 = 31,757.06/x
3. Step 3: Cross multiply
   21,120.75x = 31,757.06 × 31,757.06
4. Step 4: Simplify right side
   21,120.75x = 1,008,511,018.63
5. Step 5: Solve for x
   x = 1,008,511,018.63/21,120.75
6. Step 6: Final answer
   x = 47,749.77