Finding the Third Proportional to 90,155 and 140,147

Step by Step Solution

1. Step 1: Write the proportion equation
   90,155 : 140,147 = 140,147 : x
2. Step 2: Convert to fraction form
   90,155/140,147 = 140,147/x
3. Step 3: Cross multiply
   90,155x = 140,147 × 140,147
4. Step 4: Simplify right side
   90,155x = 19,641,181,609
5. Step 5: Solve for x
   x = 19,641,181,609/90,155
6. Step 6: Final answer
   x = 217,860.15