Finding the Third Proportional to 111,758 and 236,428

Step by Step Solution

1. Step 1: Write the proportion equation
   111,758 : 236,428 = 236,428 : x
2. Step 2: Convert to fraction form
   111,758/236,428 = 236,428/x
3. Step 3: Cross multiply
   111,758x = 236,428 × 236,428
4. Step 4: Simplify right side
   111,758x = 55,898,199,184
5. Step 5: Solve for x
   x = 55,898,199,184/111,758
6. Step 6: Final answer
   x = 500,171.79