Finding the Third Proportional to 2,139,198 and 4,662,225

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139,198 : 4,662,225 = 4,662,225 : x
2. Step 2: Convert to fraction form
   2,139,198/4,662,225 = 4,662,225/x
3. Step 3: Cross multiply
   2,139,198x = 4,662,225 × 4,662,225
4. Step 4: Simplify right side
   2,139,198x = 21,736,341,950,625
5. Step 5: Solve for x
   x = 21,736,341,950,625/2,139,198
6. Step 6: Final answer
   x = 10,160,977.13