Finding the Third Proportional to 2,645,839 and 5,609,605

Step by Step Solution

1. Step 1: Write the proportion equation
   2,645,839 : 5,609,605 = 5,609,605 : x
2. Step 2: Convert to fraction form
   2,645,839/5,609,605 = 5,609,605/x
3. Step 3: Cross multiply
   2,645,839x = 5,609,605 × 5,609,605
4. Step 4: Simplify right side
   2,645,839x = 31,467,668,256,025
5. Step 5: Solve for x
   x = 31,467,668,256,025/2,645,839
6. Step 6: Final answer
   x = 11,893,266.47