Finding the Third Proportional to 109,739 and 236,434

Step by Step Solution

1. Step 1: Write the proportion equation
   109,739 : 236,434 = 236,434 : x
2. Step 2: Convert to fraction form
   109,739/236,434 = 236,434/x
3. Step 3: Cross multiply
   109,739x = 236,434 × 236,434
4. Step 4: Simplify right side
   109,739x = 55,901,036,356
5. Step 5: Solve for x
   x = 55,901,036,356/109,739
6. Step 6: Final answer
   x = 509,399.91