Finding the Third Proportional to 647,313 and 1,320,330

Step by Step Solution

1. Step 1: Write the proportion equation
   647,313 : 1,320,330 = 1,320,330 : x
2. Step 2: Convert to fraction form
   647,313/1,320,330 = 1,320,330/x
3. Step 3: Cross multiply
   647,313x = 1,320,330 × 1,320,330
4. Step 4: Simplify right side
   647,313x = 1,743,271,308,900
5. Step 5: Solve for x
   x = 1,743,271,308,900/647,313
6. Step 6: Final answer
   x = 2,693,088.67