Finding the Third Proportional to 1,421.34 and 2,133.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,421.34 : 2,133.28 = 2,133.28 : x
2. Step 2: Convert to fraction form
   1,421.34/2,133.28 = 2,133.28/x
3. Step 3: Cross multiply
   1,421.34x = 2,133.28 × 2,133.28
4. Step 4: Simplify right side
   1,421.34x = 4,550,888.89
5. Step 5: Solve for x
   x = 4,550,888.89/1,421.34
6. Step 6: Final answer
   x = 3,201.82