Finding the Third Proportional to 2,145,389 and 3,180,955

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145,389 : 3,180,955 = 3,180,955 : x
2. Step 2: Convert to fraction form
   2,145,389/3,180,955 = 3,180,955/x
3. Step 3: Cross multiply
   2,145,389x = 3,180,955 × 3,180,955
4. Step 4: Simplify right side
   2,145,389x = 10,118,474,712,025
5. Step 5: Solve for x
   x = 10,118,474,712,025/2,145,389
6. Step 6: Final answer
   x = 4,716,382.30