Finding the Third Proportional to 109,348 and 231,368

Step by Step Solution

1. Step 1: Write the proportion equation
   109,348 : 231,368 = 231,368 : x
2. Step 2: Convert to fraction form
   109,348/231,368 = 231,368/x
3. Step 3: Cross multiply
   109,348x = 231,368 × 231,368
4. Step 4: Simplify right side
   109,348x = 53,531,151,424
5. Step 5: Solve for x
   x = 53,531,151,424/109,348
6. Step 6: Final answer
   x = 489,548.52