Finding the Third Proportional to 1,345,504 and 2,139,636

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345,504 : 2,139,636 = 2,139,636 : x
2. Step 2: Convert to fraction form
   1,345,504/2,139,636 = 2,139,636/x
3. Step 3: Cross multiply
   1,345,504x = 2,139,636 × 2,139,636
4. Step 4: Simplify right side
   1,345,504x = 4,578,042,212,496
5. Step 5: Solve for x
   x = 4,578,042,212,496/1,345,504
6. Step 6: Final answer
   x = 3,402,473.88