Finding the Third Proportional to 269,748 and 388,554

Step by Step Solution

1. Step 1: Write the proportion equation
   269,748 : 388,554 = 388,554 : x
2. Step 2: Convert to fraction form
   269,748/388,554 = 388,554/x
3. Step 3: Cross multiply
   269,748x = 388,554 × 388,554
4. Step 4: Simplify right side
   269,748x = 150,974,210,916
5. Step 5: Solve for x
   x = 150,974,210,916/269,748
6. Step 6: Final answer
   x = 559,686.12