Finding the Third Proportional to 90,018 and 142,356

Step by Step Solution

1. Step 1: Write the proportion equation
   90,018 : 142,356 = 142,356 : x
2. Step 2: Convert to fraction form
   90,018/142,356 = 142,356/x
3. Step 3: Cross multiply
   90,018x = 142,356 × 142,356
4. Step 4: Simplify right side
   90,018x = 20,265,230,736
5. Step 5: Solve for x
   x = 20,265,230,736/90,018
6. Step 6: Final answer
   x = 225,124.21