Finding the Third Proportional to 639,467 and 1,362,644

Step by Step Solution

1. Step 1: Write the proportion equation
   639,467 : 1,362,644 = 1,362,644 : x
2. Step 2: Convert to fraction form
   639,467/1,362,644 = 1,362,644/x
3. Step 3: Cross multiply
   639,467x = 1,362,644 × 1,362,644
4. Step 4: Simplify right side
   639,467x = 1,856,798,670,736
5. Step 5: Solve for x
   x = 1,856,798,670,736/639,467
6. Step 6: Final answer
   x = 2,903,666.13