Finding the Third Proportional to 111,638 and 243,004

Step by Step Solution

1. Step 1: Write the proportion equation
   111,638 : 243,004 = 243,004 : x
2. Step 2: Convert to fraction form
   111,638/243,004 = 243,004/x
3. Step 3: Cross multiply
   111,638x = 243,004 × 243,004
4. Step 4: Simplify right side
   111,638x = 59,050,944,016
5. Step 5: Solve for x
   x = 59,050,944,016/111,638
6. Step 6: Final answer
   x = 528,950.21