Finding the Third Proportional to 269,109 and 620,271

Step by Step Solution

1. Step 1: Write the proportion equation
   269,109 : 620,271 = 620,271 : x
2. Step 2: Convert to fraction form
   269,109/620,271 = 620,271/x
3. Step 3: Cross multiply
   269,109x = 620,271 × 620,271
4. Step 4: Simplify right side
   269,109x = 384,736,113,441
5. Step 5: Solve for x
   x = 384,736,113,441/269,109
6. Step 6: Final answer
   x = 1,429,666.47