Finding the Third Proportional to 1,396,430 and 2,135,225

Step by Step Solution

1. Step 1: Write the proportion equation
   1,396,430 : 2,135,225 = 2,135,225 : x
2. Step 2: Convert to fraction form
   1,396,430/2,135,225 = 2,135,225/x
3. Step 3: Cross multiply
   1,396,430x = 2,135,225 × 2,135,225
4. Step 4: Simplify right side
   1,396,430x = 4,559,185,800,625
5. Step 5: Solve for x
   x = 4,559,185,800,625/1,396,430
6. Step 6: Final answer
   x = 3,264,886.75