Finding the Third Proportional to 123,138 and 265,108

Step by Step Solution

1. Step 1: Write the proportion equation
   123,138 : 265,108 = 265,108 : x
2. Step 2: Convert to fraction form
   123,138/265,108 = 265,108/x
3. Step 3: Cross multiply
   123,138x = 265,108 × 265,108
4. Step 4: Simplify right side
   123,138x = 70,282,251,664
5. Step 5: Solve for x
   x = 70,282,251,664/123,138
6. Step 6: Final answer
   x = 570,760.06