Finding the Third Proportional to 9,761.77 and 20,215.51

Step by Step Solution

1. Step 1: Write the proportion equation
   9,761.77 : 20,215.51 = 20,215.51 : x
2. Step 2: Convert to fraction form
   9,761.77/20,215.51 = 20,215.51/x
3. Step 3: Cross multiply
   9,761.77x = 20,215.51 × 20,215.51
4. Step 4: Simplify right side
   9,761.77x = 408,666,914.05
5. Step 5: Solve for x
   x = 408,666,914.05/9,761.77
6. Step 6: Final answer
   x = 41,864.04