Finding the Third Proportional to 1,419,840 and 2,130,408

Step by Step Solution

1. Step 1: Write the proportion equation
   1,419,840 : 2,130,408 = 2,130,408 : x
2. Step 2: Convert to fraction form
   1,419,840/2,130,408 = 2,130,408/x
3. Step 3: Cross multiply
   1,419,840x = 2,130,408 × 2,130,408
4. Step 4: Simplify right side
   1,419,840x = 4,538,638,246,464
5. Step 5: Solve for x
   x = 4,538,638,246,464/1,419,840
6. Step 6: Final answer
   x = 3,196,584.30