Finding the Third Proportional to 15,301.88 and 21,661.69

Step by Step Solution

1. Step 1: Write the proportion equation
   15,301.88 : 21,661.69 = 21,661.69 : x
2. Step 2: Convert to fraction form
   15,301.88/21,661.69 = 21,661.69/x
3. Step 3: Cross multiply
   15,301.88x = 21,661.69 × 21,661.69
4. Step 4: Simplify right side
   15,301.88x = 469,228,705.35
5. Step 5: Solve for x
   x = 469,228,705.35/15,301.88
6. Step 6: Final answer
   x = 30,664.78