Finding the Third Proportional to 636,176 and 1,386,664

Step by Step Solution

1. Step 1: Write the proportion equation
   636,176 : 1,386,664 = 1,386,664 : x
2. Step 2: Convert to fraction form
   636,176/1,386,664 = 1,386,664/x
3. Step 3: Cross multiply
   636,176x = 1,386,664 × 1,386,664
4. Step 4: Simplify right side
   636,176x = 1,922,837,048,896
5. Step 5: Solve for x
   x = 1,922,837,048,896/636,176
6. Step 6: Final answer
   x = 3,022,492.28