Finding the Third Proportional to 1,666,661 and 3,586,245

Step by Step Solution

1. Step 1: Write the proportion equation
   1,666,661 : 3,586,245 = 3,586,245 : x
2. Step 2: Convert to fraction form
   1,666,661/3,586,245 = 3,586,245/x
3. Step 3: Cross multiply
   1,666,661x = 3,586,245 × 3,586,245
4. Step 4: Simplify right side
   1,666,661x = 12,861,153,200,025
5. Step 5: Solve for x
   x = 12,861,153,200,025/1,666,661
6. Step 6: Final answer
   x = 7,716,718.16