Finding the Third Proportional to 86,436 and 188,016

Step by Step Solution

1. Step 1: Write the proportion equation
   86,436 : 188,016 = 188,016 : x
2. Step 2: Convert to fraction form
   86,436/188,016 = 188,016/x
3. Step 3: Cross multiply
   86,436x = 188,016 × 188,016
4. Step 4: Simplify right side
   86,436x = 35,350,016,256
5. Step 5: Solve for x
   x = 35,350,016,256/86,436
6. Step 6: Final answer
   x = 408,973.30