Finding the Third Proportional to 688,336 and 1,036,669

Step by Step Solution

1. Step 1: Write the proportion equation
   688,336 : 1,036,669 = 1,036,669 : x
2. Step 2: Convert to fraction form
   688,336/1,036,669 = 1,036,669/x
3. Step 3: Cross multiply
   688,336x = 1,036,669 × 1,036,669
4. Step 4: Simplify right side
   688,336x = 1,074,682,615,561
5. Step 5: Solve for x
   x = 1,074,682,615,561/688,336
6. Step 6: Final answer
   x = 1,561,276.20