Finding the Third Proportional to 90,155 and 140,336

Step by Step Solution

1. Step 1: Write the proportion equation
   90,155 : 140,336 = 140,336 : x
2. Step 2: Convert to fraction form
   90,155/140,336 = 140,336/x
3. Step 3: Cross multiply
   90,155x = 140,336 × 140,336
4. Step 4: Simplify right side
   90,155x = 19,694,192,896
5. Step 5: Solve for x
   x = 19,694,192,896/90,155
6. Step 6: Final answer
   x = 218,448.15