Finding the Third Proportional to 1,636,644 and 3,556,560

Step by Step Solution

1. Step 1: Write the proportion equation
   1,636,644 : 3,556,560 = 3,556,560 : x
2. Step 2: Convert to fraction form
   1,636,644/3,556,560 = 3,556,560/x
3. Step 3: Cross multiply
   1,636,644x = 3,556,560 × 3,556,560
4. Step 4: Simplify right side
   1,636,644x = 12,649,119,033,600
5. Step 5: Solve for x
   x = 12,649,119,033,600/1,636,644
6. Step 6: Final answer
   x = 7,728,693.00