Finding the Third Proportional to 2,188 and 3,118

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188 : 3,118 = 3,118 : x
2. Step 2: Convert to fraction form
   2,188/3,118 = 3,118/x
3. Step 3: Cross multiply
   2,188x = 3,118 × 3,118
4. Step 4: Simplify right side
   2,188x = 9,721,924
5. Step 5: Solve for x
   x = 9,721,924/2,188
6. Step 6: Final answer
   x = 4,443.29