Finding the Third Proportional to 1,423.56 and 3,127.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,423.56 : 3,127.31 = 3,127.31 : x
2. Step 2: Convert to fraction form
   1,423.56/3,127.31 = 3,127.31/x
3. Step 3: Cross multiply
   1,423.56x = 3,127.31 × 3,127.31
4. Step 4: Simplify right side
   1,423.56x = 9,780,046.82
5. Step 5: Solve for x
   x = 9,780,046.82/1,423.56
6. Step 6: Final answer
   x = 6,870.11