Finding the Third Proportional to 2,199,200 and 3,405,216

Step by Step Solution

1. Step 1: Write the proportion equation
   2,199,200 : 3,405,216 = 3,405,216 : x
2. Step 2: Convert to fraction form
   2,199,200/3,405,216 = 3,405,216/x
3. Step 3: Cross multiply
   2,199,200x = 3,405,216 × 3,405,216
4. Step 4: Simplify right side
   2,199,200x = 11,595,496,006,656
5. Step 5: Solve for x
   x = 11,595,496,006,656/2,199,200
6. Step 6: Final answer
   x = 5,272,597.31