Finding the Third Proportional to 90,157 and 140,339

Step by Step Solution

1. Step 1: Write the proportion equation
   90,157 : 140,339 = 140,339 : x
2. Step 2: Convert to fraction form
   90,157/140,339 = 140,339/x
3. Step 3: Cross multiply
   90,157x = 140,339 × 140,339
4. Step 4: Simplify right side
   90,157x = 19,695,034,921
5. Step 5: Solve for x
   x = 19,695,034,921/90,157
6. Step 6: Final answer
   x = 218,452.64