Finding the Third Proportional to 4,485,910 and 9,729,008

Step by Step Solution

1. Step 1: Write the proportion equation
   4,485,910 : 9,729,008 = 9,729,008 : x
2. Step 2: Convert to fraction form
   4,485,910/9,729,008 = 9,729,008/x
3. Step 3: Cross multiply
   4,485,910x = 9,729,008 × 9,729,008
4. Step 4: Simplify right side
   4,485,910x = 94,653,596,664,064
5. Step 5: Solve for x
   x = 94,653,596,664,064/4,485,910
6. Step 6: Final answer
   x = 21,100,199.66