Finding the Third Proportional to 109,218 and 233,620

Step by Step Solution

1. Step 1: Write the proportion equation
   109,218 : 233,620 = 233,620 : x
2. Step 2: Convert to fraction form
   109,218/233,620 = 233,620/x
3. Step 3: Cross multiply
   109,218x = 233,620 × 233,620
4. Step 4: Simplify right side
   109,218x = 54,578,304,400
5. Step 5: Solve for x
   x = 54,578,304,400/109,218
6. Step 6: Final answer
   x = 499,718.95