Finding the Third Proportional to 1,438,916 and 2,078,812

Step by Step Solution

1. Step 1: Write the proportion equation
   1,438,916 : 2,078,812 = 2,078,812 : x
2. Step 2: Convert to fraction form
   1,438,916/2,078,812 = 2,078,812/x
3. Step 3: Cross multiply
   1,438,916x = 2,078,812 × 2,078,812
4. Step 4: Simplify right side
   1,438,916x = 4,321,459,331,344
5. Step 5: Solve for x
   x = 4,321,459,331,344/1,438,916
6. Step 6: Final answer
   x = 3,003,274.22