Finding the Third Proportional to 636,294 and 1,372,216

Step by Step Solution

1. Step 1: Write the proportion equation
   636,294 : 1,372,216 = 1,372,216 : x
2. Step 2: Convert to fraction form
   636,294/1,372,216 = 1,372,216/x
3. Step 3: Cross multiply
   636,294x = 1,372,216 × 1,372,216
4. Step 4: Simplify right side
   636,294x = 1,882,976,750,656
5. Step 5: Solve for x
   x = 1,882,976,750,656/636,294
6. Step 6: Final answer
   x = 2,959,287.30