Finding the Third Proportional to 181,858 and 388,986

Step by Step Solution

1. Step 1: Write the proportion equation
   181,858 : 388,986 = 388,986 : x
2. Step 2: Convert to fraction form
   181,858/388,986 = 388,986/x
3. Step 3: Cross multiply
   181,858x = 388,986 × 388,986
4. Step 4: Simplify right side
   181,858x = 151,310,108,196
5. Step 5: Solve for x
   x = 151,310,108,196/181,858
6. Step 6: Final answer
   x = 832,023.38