Finding the Third Proportional to 89,439 and 186,222

Step by Step Solution

1. Step 1: Write the proportion equation
   89,439 : 186,222 = 186,222 : x
2. Step 2: Convert to fraction form
   89,439/186,222 = 186,222/x
3. Step 3: Cross multiply
   89,439x = 186,222 × 186,222
4. Step 4: Simplify right side
   89,439x = 34,678,633,284
5. Step 5: Solve for x
   x = 34,678,633,284/89,439
6. Step 6: Final answer
   x = 387,735.03