Finding the Third Proportional to 2,602,839 and 5,640,068

Step by Step Solution

1. Step 1: Write the proportion equation
   2,602,839 : 5,640,068 = 5,640,068 : x
2. Step 2: Convert to fraction form
   2,602,839/5,640,068 = 5,640,068/x
3. Step 3: Cross multiply
   2,602,839x = 5,640,068 × 5,640,068
4. Step 4: Simplify right side
   2,602,839x = 31,810,367,044,624
5. Step 5: Solve for x
   x = 31,810,367,044,624/2,602,839
6. Step 6: Final answer
   x = 12,221,411.71