Finding the Third Proportional to 153,618 and 238,419

Step by Step Solution

1. Step 1: Write the proportion equation
   153,618 : 238,419 = 238,419 : x
2. Step 2: Convert to fraction form
   153,618/238,419 = 238,419/x
3. Step 3: Cross multiply
   153,618x = 238,419 × 238,419
4. Step 4: Simplify right side
   153,618x = 56,843,619,561
5. Step 5: Solve for x
   x = 56,843,619,561/153,618
6. Step 6: Final answer
   x = 370,032.29