Finding the Third Proportional to 123,255 and 262,401.19

Step by Step Solution

1. Step 1: Write the proportion equation
   123,255 : 262,401.19 = 262,401.19 : x
2. Step 2: Convert to fraction form
   123,255/262,401.19 = 262,401.19/x
3. Step 3: Cross multiply
   123,255x = 262,401.19 × 262,401.19
4. Step 4: Simplify right side
   123,255x = 68,854,383,201.41
5. Step 5: Solve for x
   x = 68,854,383,201.41/123,255
6. Step 6: Final answer
   x = 558,633.59