Finding the Third Proportional to 111,136 and 243,353

Step by Step Solution

1. Step 1: Write the proportion equation
   111,136 : 243,353 = 243,353 : x
2. Step 2: Convert to fraction form
   111,136/243,353 = 243,353/x
3. Step 3: Cross multiply
   111,136x = 243,353 × 243,353
4. Step 4: Simplify right side
   111,136x = 59,220,682,609
5. Step 5: Solve for x
   x = 59,220,682,609/111,136
6. Step 6: Final answer
   x = 532,866.78