Finding the Third Proportional to 928,644 and 1,388,697

Step by Step Solution

1. Step 1: Write the proportion equation
   928,644 : 1,388,697 = 1,388,697 : x
2. Step 2: Convert to fraction form
   928,644/1,388,697 = 1,388,697/x
3. Step 3: Cross multiply
   928,644x = 1,388,697 × 1,388,697
4. Step 4: Simplify right side
   928,644x = 1,928,479,357,809
5. Step 5: Solve for x
   x = 1,928,479,357,809/928,644
6. Step 6: Final answer
   x = 2,076,661.62