Finding the Third Proportional to 123,299 and 269,428

Step by Step Solution

1. Step 1: Write the proportion equation
   123,299 : 269,428 = 269,428 : x
2. Step 2: Convert to fraction form
   123,299/269,428 = 269,428/x
3. Step 3: Cross multiply
   123,299x = 269,428 × 269,428
4. Step 4: Simplify right side
   123,299x = 72,591,447,184
5. Step 5: Solve for x
   x = 72,591,447,184/123,299
6. Step 6: Final answer
   x = 588,743.19