Finding the Third Proportional to 90,979 and 123,605

Step by Step Solution

1. Step 1: Write the proportion equation
   90,979 : 123,605 = 123,605 : x
2. Step 2: Convert to fraction form
   90,979/123,605 = 123,605/x
3. Step 3: Cross multiply
   90,979x = 123,605 × 123,605
4. Step 4: Simplify right side
   90,979x = 15,278,196,025
5. Step 5: Solve for x
   x = 15,278,196,025/90,979
6. Step 6: Final answer
   x = 167,931.02