Finding the Third Proportional to 858.94 and 1,853.72

Step by Step Solution

1. Step 1: Write the proportion equation
   858.94 : 1,853.72 = 1,853.72 : x
2. Step 2: Convert to fraction form
   858.94/1,853.72 = 1,853.72/x
3. Step 3: Cross multiply
   858.94x = 1,853.72 × 1,853.72
4. Step 4: Simplify right side
   858.94x = 3,436,273.20
5. Step 5: Solve for x
   x = 3,436,273.20/858.94
6. Step 6: Final answer
   x = 4,000.61