Finding the Third Proportional to 88,897.50 and 188,257.50

Step by Step Solution

1. Step 1: Write the proportion equation
   88,897.50 : 188,257.50 = 188,257.50 : x
2. Step 2: Convert to fraction form
   88,897.50/188,257.50 = 188,257.50/x
3. Step 3: Cross multiply
   88,897.50x = 188,257.50 × 188,257.50
4. Step 4: Simplify right side
   88,897.50x = 35,440,886,306.25
5. Step 5: Solve for x
   x = 35,440,886,306.25/88,897.50
6. Step 6: Final answer
   x = 398,671.35