Finding the Third Proportional to 1,538,629 and 3,561,648

Step by Step Solution

1. Step 1: Write the proportion equation
   1,538,629 : 3,561,648 = 3,561,648 : x
2. Step 2: Convert to fraction form
   1,538,629/3,561,648 = 3,561,648/x
3. Step 3: Cross multiply
   1,538,629x = 3,561,648 × 3,561,648
4. Step 4: Simplify right side
   1,538,629x = 12,685,336,475,904
5. Step 5: Solve for x
   x = 12,685,336,475,904/1,538,629
6. Step 6: Final answer
   x = 8,244,571.29