Finding the Third Proportional to 5,479,380 and 8,726,508

Step by Step Solution

1. Step 1: Write the proportion equation
   5,479,380 : 8,726,508 = 8,726,508 : x
2. Step 2: Convert to fraction form
   5,479,380/8,726,508 = 8,726,508/x
3. Step 3: Cross multiply
   5,479,380x = 8,726,508 × 8,726,508
4. Step 4: Simplify right side
   5,479,380x = 76,151,941,874,064
5. Step 5: Solve for x
   x = 76,151,941,874,064/5,479,380
6. Step 6: Final answer
   x = 13,897,912.15