Finding the Third Proportional to 109,306 and 238,863

Step by Step Solution

1. Step 1: Write the proportion equation
   109,306 : 238,863 = 238,863 : x
2. Step 2: Convert to fraction form
   109,306/238,863 = 238,863/x
3. Step 3: Cross multiply
   109,306x = 238,863 × 238,863
4. Step 4: Simplify right side
   109,306x = 57,055,532,769
5. Step 5: Solve for x
   x = 57,055,532,769/109,306
6. Step 6: Final answer
   x = 521,979.88