Finding the Third Proportional to 86,439 and 188,022

Step by Step Solution

1. Step 1: Write the proportion equation
   86,439 : 188,022 = 188,022 : x
2. Step 2: Convert to fraction form
   86,439/188,022 = 188,022/x
3. Step 3: Cross multiply
   86,439x = 188,022 × 188,022
4. Step 4: Simplify right side
   86,439x = 35,352,272,484
5. Step 5: Solve for x
   x = 35,352,272,484/86,439
6. Step 6: Final answer
   x = 408,985.21