Finding the Third Proportional to 2,479,789 and 5,257,172

Step by Step Solution

1. Step 1: Write the proportion equation
   2,479,789 : 5,257,172 = 5,257,172 : x
2. Step 2: Convert to fraction form
   2,479,789/5,257,172 = 5,257,172/x
3. Step 3: Cross multiply
   2,479,789x = 5,257,172 × 5,257,172
4. Step 4: Simplify right side
   2,479,789x = 27,637,857,437,584
5. Step 5: Solve for x
   x = 27,637,857,437,584/2,479,789
6. Step 6: Final answer
   x = 11,145,245.60