Finding the Third Proportional to 111,294 and 262,459

Step by Step Solution

1. Step 1: Write the proportion equation
   111,294 : 262,459 = 262,459 : x
2. Step 2: Convert to fraction form
   111,294/262,459 = 262,459/x
3. Step 3: Cross multiply
   111,294x = 262,459 × 262,459
4. Step 4: Simplify right side
   111,294x = 68,884,726,681
5. Step 5: Solve for x
   x = 68,884,726,681/111,294
6. Step 6: Final answer
   x = 618,943.76