Finding the Third Proportional to 1,612.31 and 3,418.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,612.31 : 3,418.69 = 3,418.69 : x
2. Step 2: Convert to fraction form
   1,612.31/3,418.69 = 3,418.69/x
3. Step 3: Cross multiply
   1,612.31x = 3,418.69 × 3,418.69
4. Step 4: Simplify right side
   1,612.31x = 11,687,424.22
5. Step 5: Solve for x
   x = 11,687,424.22/1,612.31
6. Step 6: Final answer
   x = 7,248.86