Finding the Third Proportional to 3,499,576 and 7,278,512

Step by Step Solution

1. Step 1: Write the proportion equation
   3,499,576 : 7,278,512 = 7,278,512 : x
2. Step 2: Convert to fraction form
   3,499,576/7,278,512 = 7,278,512/x
3. Step 3: Cross multiply
   3,499,576x = 7,278,512 × 7,278,512
4. Step 4: Simplify right side
   3,499,576x = 52,976,736,934,144
5. Step 5: Solve for x
   x = 52,976,736,934,144/3,499,576
6. Step 6: Final answer
   x = 15,138,044.42