Finding the Third Proportional to 636,856.50 and 1,022,631

Step by Step Solution

1. Step 1: Write the proportion equation
   636,856.50 : 1,022,631 = 1,022,631 : x
2. Step 2: Convert to fraction form
   636,856.50/1,022,631 = 1,022,631/x
3. Step 3: Cross multiply
   636,856.50x = 1,022,631 × 1,022,631
4. Step 4: Simplify right side
   636,856.50x = 1,045,774,162,161
5. Step 5: Solve for x
   x = 1,045,774,162,161/636,856.50
6. Step 6: Final answer
   x = 1,642,087.60