Finding the Third Proportional to 636,240 and 1,372,160

Step by Step Solution

1. Step 1: Write the proportion equation
   636,240 : 1,372,160 = 1,372,160 : x
2. Step 2: Convert to fraction form
   636,240/1,372,160 = 1,372,160/x
3. Step 3: Cross multiply
   636,240x = 1,372,160 × 1,372,160
4. Step 4: Simplify right side
   636,240x = 1,882,823,065,600
5. Step 5: Solve for x
   x = 1,882,823,065,600/636,240
6. Step 6: Final answer
   x = 2,959,296.91