Finding the Third Proportional to 1,431.56 and 2,127.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,431.56 : 2,127.09 = 2,127.09 : x
2. Step 2: Convert to fraction form
   1,431.56/2,127.09 = 2,127.09/x
3. Step 3: Cross multiply
   1,431.56x = 2,127.09 × 2,127.09
4. Step 4: Simplify right side
   1,431.56x = 4,524,527.82
5. Step 5: Solve for x
   x = 4,524,527.82/1,431.56
6. Step 6: Final answer
   x = 3,160.55