Finding the Third Proportional to 1,405.59 and 2,145.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,405.59 : 2,145.62 = 2,145.62 : x
2. Step 2: Convert to fraction form
   1,405.59/2,145.62 = 2,145.62/x
3. Step 3: Cross multiply
   1,405.59x = 2,145.62 × 2,145.62
4. Step 4: Simplify right side
   1,405.59x = 4,603,685.16
5. Step 5: Solve for x
   x = 4,603,685.16/1,405.59
6. Step 6: Final answer
   x = 3,275.28