Finding the Third Proportional to 123,430 and 269,160

Step by Step Solution

1. Step 1: Write the proportion equation
   123,430 : 269,160 = 269,160 : x
2. Step 2: Convert to fraction form
   123,430/269,160 = 269,160/x
3. Step 3: Cross multiply
   123,430x = 269,160 × 269,160
4. Step 4: Simplify right side
   123,430x = 72,447,105,600
5. Step 5: Solve for x
   x = 72,447,105,600/123,430
6. Step 6: Final answer
   x = 586,948.92