Finding the Third Proportional to 1,858 and 4,059.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,858 : 4,059.50 = 4,059.50 : x
2. Step 2: Convert to fraction form
   1,858/4,059.50 = 4,059.50/x
3. Step 3: Cross multiply
   1,858x = 4,059.50 × 4,059.50
4. Step 4: Simplify right side
   1,858x = 16,479,540.25
5. Step 5: Solve for x
   x = 16,479,540.25/1,858
6. Step 6: Final answer
   x = 8,869.50