Finding the Third Proportional to 9,699.75 and 12,924.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,699.75 : 12,924.56 = 12,924.56 : x
2. Step 2: Convert to fraction form
   9,699.75/12,924.56 = 12,924.56/x
3. Step 3: Cross multiply
   9,699.75x = 12,924.56 × 12,924.56
4. Step 4: Simplify right side
   9,699.75x = 167,044,315.82
5. Step 5: Solve for x
   x = 167,044,315.82/9,699.75
6. Step 6: Final answer
   x = 17,221.51