Finding the Third Proportional to 90,783 and 141,147

Step by Step Solution

1. Step 1: Write the proportion equation
   90,783 : 141,147 = 141,147 : x
2. Step 2: Convert to fraction form
   90,783/141,147 = 141,147/x
3. Step 3: Cross multiply
   90,783x = 141,147 × 141,147
4. Step 4: Simplify right side
   90,783x = 19,922,475,609
5. Step 5: Solve for x
   x = 19,922,475,609/90,783
6. Step 6: Final answer
   x = 219,451.61