Finding the Third Proportional to 2,145,391 and 3,180,958

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145,391 : 3,180,958 = 3,180,958 : x
2. Step 2: Convert to fraction form
   2,145,391/3,180,958 = 3,180,958/x
3. Step 3: Cross multiply
   2,145,391x = 3,180,958 × 3,180,958
4. Step 4: Simplify right side
   2,145,391x = 10,118,493,797,764
5. Step 5: Solve for x
   x = 10,118,493,797,764/2,145,391
6. Step 6: Final answer
   x = 4,716,386.80