Finding the Third Proportional to 636,480 and 1,386,576

Step by Step Solution

1. Step 1: Write the proportion equation
   636,480 : 1,386,576 = 1,386,576 : x
2. Step 2: Convert to fraction form
   636,480/1,386,576 = 1,386,576/x
3. Step 3: Cross multiply
   636,480x = 1,386,576 × 1,386,576
4. Step 4: Simplify right side
   636,480x = 1,922,593,003,776
5. Step 5: Solve for x
   x = 1,922,593,003,776/636,480
6. Step 6: Final answer
   x = 3,020,665.23