Finding the Third Proportional to 5,206,218 and 10,666,122

Step by Step Solution

1. Step 1: Write the proportion equation
   5,206,218 : 10,666,122 = 10,666,122 : x
2. Step 2: Convert to fraction form
   5,206,218/10,666,122 = 10,666,122/x
3. Step 3: Cross multiply
   5,206,218x = 10,666,122 × 10,666,122
4. Step 4: Simplify right side
   5,206,218x = 113,766,158,518,884
5. Step 5: Solve for x
   x = 113,766,158,518,884/5,206,218
6. Step 6: Final answer
   x = 21,851,977.49