Finding the Third Proportional to 855.38 and 1,870.50

Step by Step Solution

1. Step 1: Write the proportion equation
   855.38 : 1,870.50 = 1,870.50 : x
2. Step 2: Convert to fraction form
   855.38/1,870.50 = 1,870.50/x
3. Step 3: Cross multiply
   855.38x = 1,870.50 × 1,870.50
4. Step 4: Simplify right side
   855.38x = 3,498,770.25
5. Step 5: Solve for x
   x = 3,498,770.25/855.38
6. Step 6: Final answer
   x = 4,090.33