Finding the Third Proportional to 1,858.10 and 4,190.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,858.10 : 4,190.33 = 4,190.33 : x
2. Step 2: Convert to fraction form
   1,858.10/4,190.33 = 4,190.33/x
3. Step 3: Cross multiply
   1,858.10x = 4,190.33 × 4,190.33
4. Step 4: Simplify right side
   1,858.10x = 17,558,833.43
5. Step 5: Solve for x
   x = 17,558,833.43/1,858.10
6. Step 6: Final answer
   x = 9,449.91