Finding the Third Proportional to 1,345.43 and 2,121.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.43 : 2,121.33 = 2,121.33 : x
2. Step 2: Convert to fraction form
   1,345.43/2,121.33 = 2,121.33/x
3. Step 3: Cross multiply
   1,345.43x = 2,121.33 × 2,121.33
4. Step 4: Simplify right side
   1,345.43x = 4,500,033.01
5. Step 5: Solve for x
   x = 4,500,033.01/1,345.43
6. Step 6: Final answer
   x = 3,344.68