Finding the Third Proportional to 88,678.50 and 188,857.50

Step by Step Solution

1. Step 1: Write the proportion equation
   88,678.50 : 188,857.50 = 188,857.50 : x
2. Step 2: Convert to fraction form
   88,678.50/188,857.50 = 188,857.50/x
3. Step 3: Cross multiply
   88,678.50x = 188,857.50 × 188,857.50
4. Step 4: Simplify right side
   88,678.50x = 35,667,155,306.25
5. Step 5: Solve for x
   x = 35,667,155,306.25/88,678.50
6. Step 6: Final answer
   x = 402,207.47