Finding the Third Proportional to 1,666,660 and 3,586,243

Step by Step Solution

1. Step 1: Write the proportion equation
   1,666,660 : 3,586,243 = 3,586,243 : x
2. Step 2: Convert to fraction form
   1,666,660/3,586,243 = 3,586,243/x
3. Step 3: Cross multiply
   1,666,660x = 3,586,243 × 3,586,243
4. Step 4: Simplify right side
   1,666,660x = 12,861,138,855,049
5. Step 5: Solve for x
   x = 12,861,138,855,049/1,666,660
6. Step 6: Final answer
   x = 7,716,714.18