Finding the Third Proportional to 7,783.91 and 16,121.69

Step by Step Solution

1. Step 1: Write the proportion equation
   7,783.91 : 16,121.69 = 16,121.69 : x
2. Step 2: Convert to fraction form
   7,783.91/16,121.69 = 16,121.69/x
3. Step 3: Cross multiply
   7,783.91x = 16,121.69 × 16,121.69
4. Step 4: Simplify right side
   7,783.91x = 259,908,870.82
5. Step 5: Solve for x
   x = 259,908,870.82/7,783.91
6. Step 6: Final answer
   x = 33,390.53