Finding the Third Proportional to 1,425,198 and 2,139,672

Step by Step Solution

1. Step 1: Write the proportion equation
   1,425,198 : 2,139,672 = 2,139,672 : x
2. Step 2: Convert to fraction form
   1,425,198/2,139,672 = 2,139,672/x
3. Step 3: Cross multiply
   1,425,198x = 2,139,672 × 2,139,672
4. Step 4: Simplify right side
   1,425,198x = 4,578,196,267,584
5. Step 5: Solve for x
   x = 4,578,196,267,584/1,425,198
6. Step 6: Final answer
   x = 3,212,322.97