Finding the Third Proportional to 2,133.21 and 3,091.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,133.21 : 3,091.61 = 3,091.61 : x
2. Step 2: Convert to fraction form
   2,133.21/3,091.61 = 3,091.61/x
3. Step 3: Cross multiply
   2,133.21x = 3,091.61 × 3,091.61
4. Step 4: Simplify right side
   2,133.21x = 9,558,024.37
5. Step 5: Solve for x
   x = 9,558,024.37/2,133.21
6. Step 6: Final answer
   x = 4,480.58