Finding the Third Proportional to 88,112.25 and 188,689.50

Step by Step Solution

1. Step 1: Write the proportion equation
   88,112.25 : 188,689.50 = 188,689.50 : x
2. Step 2: Convert to fraction form
   88,112.25/188,689.50 = 188,689.50/x
3. Step 3: Cross multiply
   88,112.25x = 188,689.50 × 188,689.50
4. Step 4: Simplify right side
   88,112.25x = 35,603,727,410.25
5. Step 5: Solve for x
   x = 35,603,727,410.25/88,112.25
6. Step 6: Final answer
   x = 404,072.39