Finding the Third Proportional to 647,424 and 1,410,669

Step by Step Solution

1. Step 1: Write the proportion equation
   647,424 : 1,410,669 = 1,410,669 : x
2. Step 2: Convert to fraction form
   647,424/1,410,669 = 1,410,669/x
3. Step 3: Cross multiply
   647,424x = 1,410,669 × 1,410,669
4. Step 4: Simplify right side
   647,424x = 1,989,987,027,561
5. Step 5: Solve for x
   x = 1,989,987,027,561/647,424
6. Step 6: Final answer
   x = 3,073,699.81