Finding the Third Proportional to 111,061 and 239,853

Step by Step Solution

1. Step 1: Write the proportion equation
   111,061 : 239,853 = 239,853 : x
2. Step 2: Convert to fraction form
   111,061/239,853 = 239,853/x
3. Step 3: Cross multiply
   111,061x = 239,853 × 239,853
4. Step 4: Simplify right side
   111,061x = 57,529,461,609
5. Step 5: Solve for x
   x = 57,529,461,609/111,061
6. Step 6: Final answer
   x = 517,998.77