Finding the Third Proportional to 871.50 and 1,902

Step by Step Solution

1. Step 1: Write the proportion equation
   871.50 : 1,902 = 1,902 : x
2. Step 2: Convert to fraction form
   871.50/1,902 = 1,902/x
3. Step 3: Cross multiply
   871.50x = 1,902 × 1,902
4. Step 4: Simplify right side
   871.50x = 3,617,604
5. Step 5: Solve for x
   x = 3,617,604/871.50
6. Step 6: Final answer
   x = 4,151.01