Finding the Third Proportional to 111,758 and 242,438

Step by Step Solution

1. Step 1: Write the proportion equation
   111,758 : 242,438 = 242,438 : x
2. Step 2: Convert to fraction form
   111,758/242,438 = 242,438/x
3. Step 3: Cross multiply
   111,758x = 242,438 × 242,438
4. Step 4: Simplify right side
   111,758x = 58,776,183,844
5. Step 5: Solve for x
   x = 58,776,183,844/111,758
6. Step 6: Final answer
   x = 525,923.73