Finding the Third Proportional to 123,422 and 269,145

Step by Step Solution

1. Step 1: Write the proportion equation
   123,422 : 269,145 = 269,145 : x
2. Step 2: Convert to fraction form
   123,422/269,145 = 269,145/x
3. Step 3: Cross multiply
   123,422x = 269,145 × 269,145
4. Step 4: Simplify right side
   123,422x = 72,439,031,025
5. Step 5: Solve for x
   x = 72,439,031,025/123,422
6. Step 6: Final answer
   x = 586,921.55