Finding the Third Proportional to 890.50 and 1,868

Step by Step Solution

1. Step 1: Write the proportion equation
   890.50 : 1,868 = 1,868 : x
2. Step 2: Convert to fraction form
   890.50/1,868 = 1,868/x
3. Step 3: Cross multiply
   890.50x = 1,868 × 1,868
4. Step 4: Simplify right side
   890.50x = 3,489,424
5. Step 5: Solve for x
   x = 3,489,424/890.50
6. Step 6: Final answer
   x = 3,918.50