Finding the Third Proportional to 89,518 and 188,251.75

Step by Step Solution

1. Step 1: Write the proportion equation
   89,518 : 188,251.75 = 188,251.75 : x
2. Step 2: Convert to fraction form
   89,518/188,251.75 = 188,251.75/x
3. Step 3: Cross multiply
   89,518x = 188,251.75 × 188,251.75
4. Step 4: Simplify right side
   89,518x = 35,438,721,378.06
5. Step 5: Solve for x
   x = 35,438,721,378.06/89,518
6. Step 6: Final answer
   x = 395,883.75