Finding the Third Proportional to 123,300 and 269,430

Step by Step Solution

1. Step 1: Write the proportion equation
   123,300 : 269,430 = 269,430 : x
2. Step 2: Convert to fraction form
   123,300/269,430 = 269,430/x
3. Step 3: Cross multiply
   123,300x = 269,430 × 269,430
4. Step 4: Simplify right side
   123,300x = 72,592,524,900
5. Step 5: Solve for x
   x = 72,592,524,900/123,300
6. Step 6: Final answer
   x = 588,747.16