Finding the Third Proportional to 1,647,216 and 3,609,360

Step by Step Solution

1. Step 1: Write the proportion equation
   1,647,216 : 3,609,360 = 3,609,360 : x
2. Step 2: Convert to fraction form
   1,647,216/3,609,360 = 3,609,360/x
3. Step 3: Cross multiply
   1,647,216x = 3,609,360 × 3,609,360
4. Step 4: Simplify right side
   1,647,216x = 13,027,479,609,600
5. Step 5: Solve for x
   x = 13,027,479,609,600/1,647,216
6. Step 6: Final answer
   x = 7,908,786.47