Finding the Third Proportional to 1,286,807 and 2,541,318

Step by Step Solution

1. Step 1: Write the proportion equation
   1,286,807 : 2,541,318 = 2,541,318 : x
2. Step 2: Convert to fraction form
   1,286,807/2,541,318 = 2,541,318/x
3. Step 3: Cross multiply
   1,286,807x = 2,541,318 × 2,541,318
4. Step 4: Simplify right side
   1,286,807x = 6,458,297,177,124
5. Step 5: Solve for x
   x = 6,458,297,177,124/1,286,807
6. Step 6: Final answer
   x = 5,018,854.56