Finding the Third Proportional to 88,238 and 188,788

Step by Step Solution

1. Step 1: Write the proportion equation
   88,238 : 188,788 = 188,788 : x
2. Step 2: Convert to fraction form
   88,238/188,788 = 188,788/x
3. Step 3: Cross multiply
   88,238x = 188,788 × 188,788
4. Step 4: Simplify right side
   88,238x = 35,640,908,944
5. Step 5: Solve for x
   x = 35,640,908,944/88,238
6. Step 6: Final answer
   x = 403,917.91