Finding the Third Proportional to 111,330 and 231,840

Step by Step Solution

1. Step 1: Write the proportion equation
   111,330 : 231,840 = 231,840 : x
2. Step 2: Convert to fraction form
   111,330/231,840 = 231,840/x
3. Step 3: Cross multiply
   111,330x = 231,840 × 231,840
4. Step 4: Simplify right side
   111,330x = 53,749,785,600
5. Step 5: Solve for x
   x = 53,749,785,600/111,330
6. Step 6: Final answer
   x = 482,796.96