Finding the Third Proportional to 90,186 and 140,192

Step by Step Solution

1. Step 1: Write the proportion equation
   90,186 : 140,192 = 140,192 : x
2. Step 2: Convert to fraction form
   90,186/140,192 = 140,192/x
3. Step 3: Cross multiply
   90,186x = 140,192 × 140,192
4. Step 4: Simplify right side
   90,186x = 19,653,796,864
5. Step 5: Solve for x
   x = 19,653,796,864/90,186
6. Step 6: Final answer
   x = 217,925.14