Finding the Third Proportional to 3,979,908 and 9,355,716

Step by Step Solution

1. Step 1: Write the proportion equation
   3,979,908 : 9,355,716 = 9,355,716 : x
2. Step 2: Convert to fraction form
   3,979,908/9,355,716 = 9,355,716/x
3. Step 3: Cross multiply
   3,979,908x = 9,355,716 × 9,355,716
4. Step 4: Simplify right side
   3,979,908x = 87,529,421,872,656
5. Step 5: Solve for x
   x = 87,529,421,872,656/3,979,908
6. Step 6: Final answer
   x = 21,992,825.43