Finding the Third Proportional to 2,602,206 and 5,638,812

Step by Step Solution

1. Step 1: Write the proportion equation
   2,602,206 : 5,638,812 = 5,638,812 : x
2. Step 2: Convert to fraction form
   2,602,206/5,638,812 = 5,638,812/x
3. Step 3: Cross multiply
   2,602,206x = 5,638,812 × 5,638,812
4. Step 4: Simplify right side
   2,602,206x = 31,796,200,771,344
5. Step 5: Solve for x
   x = 31,796,200,771,344/2,602,206
6. Step 6: Final answer
   x = 12,218,940.69