Finding the Third Proportional to 1,647,356 and 3,609,640

Step by Step Solution

1. Step 1: Write the proportion equation
   1,647,356 : 3,609,640 = 3,609,640 : x
2. Step 2: Convert to fraction form
   1,647,356/3,609,640 = 3,609,640/x
3. Step 3: Cross multiply
   1,647,356x = 3,609,640 × 3,609,640
4. Step 4: Simplify right side
   1,647,356x = 13,029,500,929,600
5. Step 5: Solve for x
   x = 13,029,500,929,600/1,647,356
6. Step 6: Final answer
   x = 7,909,341.35