Finding the Third Proportional to 90,284 and 140,356

Step by Step Solution

1. Step 1: Write the proportion equation
   90,284 : 140,356 = 140,356 : x
2. Step 2: Convert to fraction form
   90,284/140,356 = 140,356/x
3. Step 3: Cross multiply
   90,284x = 140,356 × 140,356
4. Step 4: Simplify right side
   90,284x = 19,699,806,736
5. Step 5: Solve for x
   x = 19,699,806,736/90,284
6. Step 6: Final answer
   x = 218,198.20