Finding the Third Proportional to 142,892 and 310,384

Step by Step Solution

1. Step 1: Write the proportion equation
   142,892 : 310,384 = 310,384 : x
2. Step 2: Convert to fraction form
   142,892/310,384 = 310,384/x
3. Step 3: Cross multiply
   142,892x = 310,384 × 310,384
4. Step 4: Simplify right side
   142,892x = 96,338,227,456
5. Step 5: Solve for x
   x = 96,338,227,456/142,892
6. Step 6: Final answer
   x = 674,203.09