Finding the Third Proportional to 636,522 and 1,386,660

Step by Step Solution

1. Step 1: Write the proportion equation
   636,522 : 1,386,660 = 1,386,660 : x
2. Step 2: Convert to fraction form
   636,522/1,386,660 = 1,386,660/x
3. Step 3: Cross multiply
   636,522x = 1,386,660 × 1,386,660
4. Step 4: Simplify right side
   636,522x = 1,922,825,955,600
5. Step 5: Solve for x
   x = 1,922,825,955,600/636,522
6. Step 6: Final answer
   x = 3,020,831.89