Finding the Third Proportional to 90,348 and 134,215

Step by Step Solution

1. Step 1: Write the proportion equation
   90,348 : 134,215 = 134,215 : x
2. Step 2: Convert to fraction form
   90,348/134,215 = 134,215/x
3. Step 3: Cross multiply
   90,348x = 134,215 × 134,215
4. Step 4: Simplify right side
   90,348x = 18,013,666,225
5. Step 5: Solve for x
   x = 18,013,666,225/90,348
6. Step 6: Final answer
   x = 199,380.91