Finding the Third Proportional to 5,225,606 and 10,661,166

Step by Step Solution

1. Step 1: Write the proportion equation
   5,225,606 : 10,661,166 = 10,661,166 : x
2. Step 2: Convert to fraction form
   5,225,606/10,661,166 = 10,661,166/x
3. Step 3: Cross multiply
   5,225,606x = 10,661,166 × 10,661,166
4. Step 4: Simplify right side
   5,225,606x = 113,660,460,479,556
5. Step 5: Solve for x
   x = 113,660,460,479,556/5,225,606
6. Step 6: Final answer
   x = 21,750,675.52