Finding the Third Proportional to 647,472 and 1,320,624

Step by Step Solution

1. Step 1: Write the proportion equation
   647,472 : 1,320,624 = 1,320,624 : x
2. Step 2: Convert to fraction form
   647,472/1,320,624 = 1,320,624/x
3. Step 3: Cross multiply
   647,472x = 1,320,624 × 1,320,624
4. Step 4: Simplify right side
   647,472x = 1,744,047,749,376
5. Step 5: Solve for x
   x = 1,744,047,749,376/647,472
6. Step 6: Final answer
   x = 2,693,626.52