Finding the Third Proportional to 636,865 and 1,022,643

Step by Step Solution

1. Step 1: Write the proportion equation
   636,865 : 1,022,643 = 1,022,643 : x
2. Step 2: Convert to fraction form
   636,865/1,022,643 = 1,022,643/x
3. Step 3: Cross multiply
   636,865x = 1,022,643 × 1,022,643
4. Step 4: Simplify right side
   636,865x = 1,045,798,705,449
5. Step 5: Solve for x
   x = 1,045,798,705,449/636,865
6. Step 6: Final answer
   x = 1,642,104.22