Finding the Third Proportional to 909.50 and 2,108

Step by Step Solution

1. Step 1: Write the proportion equation
   909.50 : 2,108 = 2,108 : x
2. Step 2: Convert to fraction form
   909.50/2,108 = 2,108/x
3. Step 3: Cross multiply
   909.50x = 2,108 × 2,108
4. Step 4: Simplify right side
   909.50x = 4,443,664
5. Step 5: Solve for x
   x = 4,443,664/909.50
6. Step 6: Final answer
   x = 4,885.83