Finding the Third Proportional to 109,640 and 236,736

Step by Step Solution

1. Step 1: Write the proportion equation
   109,640 : 236,736 = 236,736 : x
2. Step 2: Convert to fraction form
   109,640/236,736 = 236,736/x
3. Step 3: Cross multiply
   109,640x = 236,736 × 236,736
4. Step 4: Simplify right side
   109,640x = 56,043,933,696
5. Step 5: Solve for x
   x = 56,043,933,696/109,640
6. Step 6: Final answer
   x = 511,163.20