Finding the Third Proportional to 1,405.97 and 2,151.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,405.97 : 2,151.56 = 2,151.56 : x
2. Step 2: Convert to fraction form
   1,405.97/2,151.56 = 2,151.56/x
3. Step 3: Cross multiply
   1,405.97x = 2,151.56 × 2,151.56
4. Step 4: Simplify right side
   1,405.97x = 4,629,221.19
5. Step 5: Solve for x
   x = 4,629,221.19/1,405.97
6. Step 6: Final answer
   x = 3,292.55