Finding the Third Proportional to 111,296 and 243,040

Step by Step Solution

1. Step 1: Write the proportion equation
   111,296 : 243,040 = 243,040 : x
2. Step 2: Convert to fraction form
   111,296/243,040 = 243,040/x
3. Step 3: Cross multiply
   111,296x = 243,040 × 243,040
4. Step 4: Simplify right side
   111,296x = 59,068,441,600
5. Step 5: Solve for x
   x = 59,068,441,600/111,296
6. Step 6: Final answer
   x = 530,732.83