Finding the Third Proportional to 636,396 and 1,372,368

Step by Step Solution

1. Step 1: Write the proportion equation
   636,396 : 1,372,368 = 1,372,368 : x
2. Step 2: Convert to fraction form
   636,396/1,372,368 = 1,372,368/x
3. Step 3: Cross multiply
   636,396x = 1,372,368 × 1,372,368
4. Step 4: Simplify right side
   636,396x = 1,883,393,927,424
5. Step 5: Solve for x
   x = 1,883,393,927,424/636,396
6. Step 6: Final answer
   x = 2,959,468.52