Finding the Third Proportional to 5,644,368 and 8,479,272

Step by Step Solution

1. Step 1: Write the proportion equation
   5,644,368 : 8,479,272 = 8,479,272 : x
2. Step 2: Convert to fraction form
   5,644,368/8,479,272 = 8,479,272/x
3. Step 3: Cross multiply
   5,644,368x = 8,479,272 × 8,479,272
4. Step 4: Simplify right side
   5,644,368x = 71,898,053,649,984
5. Step 5: Solve for x
   x = 71,898,053,649,984/5,644,368
6. Step 6: Final answer
   x = 12,738,016.67