Finding the Third Proportional to 1,425,189 and 2,139,660

Step by Step Solution

1. Step 1: Write the proportion equation
   1,425,189 : 2,139,660 = 2,139,660 : x
2. Step 2: Convert to fraction form
   1,425,189/2,139,660 = 2,139,660/x
3. Step 3: Cross multiply
   1,425,189x = 2,139,660 × 2,139,660
4. Step 4: Simplify right side
   1,425,189x = 4,578,144,915,600
5. Step 5: Solve for x
   x = 4,578,144,915,600/1,425,189
6. Step 6: Final answer
   x = 3,212,307.22