Finding the Third Proportional to 2,171,666 and 4,679,916

Step by Step Solution

1. Step 1: Write the proportion equation
   2,171,666 : 4,679,916 = 4,679,916 : x
2. Step 2: Convert to fraction form
   2,171,666/4,679,916 = 4,679,916/x
3. Step 3: Cross multiply
   2,171,666x = 4,679,916 × 4,679,916
4. Step 4: Simplify right side
   2,171,666x = 21,901,613,767,056
5. Step 5: Solve for x
   x = 21,901,613,767,056/2,171,666
6. Step 6: Final answer
   x = 10,085,166.76