Finding the Third Proportional to 269,910 and 388,825.50

Step by Step Solution

1. Step 1: Write the proportion equation
   269,910 : 388,825.50 = 388,825.50 : x
2. Step 2: Convert to fraction form
   269,910/388,825.50 = 388,825.50/x
3. Step 3: Cross multiply
   269,910x = 388,825.50 × 388,825.50
4. Step 4: Simplify right side
   269,910x = 151,185,269,450.25
5. Step 5: Solve for x
   x = 151,185,269,450.25/269,910
6. Step 6: Final answer
   x = 560,132.15