Finding the Third Proportional to 300,709 and 622,732

Step by Step Solution

1. Step 1: Write the proportion equation
   300,709 : 622,732 = 622,732 : x
2. Step 2: Convert to fraction form
   300,709/622,732 = 622,732/x
3. Step 3: Cross multiply
   300,709x = 622,732 × 622,732
4. Step 4: Simplify right side
   300,709x = 387,795,143,824
5. Step 5: Solve for x
   x = 387,795,143,824/300,709
6. Step 6: Final answer
   x = 1,289,602.72