Finding the Third Proportional to 1,647,360 and 3,609,648

Step by Step Solution

1. Step 1: Write the proportion equation
   1,647,360 : 3,609,648 = 3,609,648 : x
2. Step 2: Convert to fraction form
   1,647,360/3,609,648 = 3,609,648/x
3. Step 3: Cross multiply
   1,647,360x = 3,609,648 × 3,609,648
4. Step 4: Simplify right side
   1,647,360x = 13,029,558,683,904
5. Step 5: Solve for x
   x = 13,029,558,683,904/1,647,360
6. Step 6: Final answer
   x = 7,909,357.20