Finding the Third Proportional to 4,456,642 and 9,767,648

Step by Step Solution

1. Step 1: Write the proportion equation
   4,456,642 : 9,767,648 = 9,767,648 : x
2. Step 2: Convert to fraction form
   4,456,642/9,767,648 = 9,767,648/x
3. Step 3: Cross multiply
   4,456,642x = 9,767,648 × 9,767,648
4. Step 4: Simplify right side
   4,456,642x = 95,406,947,451,904
5. Step 5: Solve for x
   x = 95,406,947,451,904/4,456,642
6. Step 6: Final answer
   x = 21,407,810.51