Finding the Third Proportional to 2,603,634 and 5,640,300

Step by Step Solution

1. Step 1: Write the proportion equation
   2,603,634 : 5,640,300 = 5,640,300 : x
2. Step 2: Convert to fraction form
   2,603,634/5,640,300 = 5,640,300/x
3. Step 3: Cross multiply
   2,603,634x = 5,640,300 × 5,640,300
4. Step 4: Simplify right side
   2,603,634x = 31,812,984,090,000
5. Step 5: Solve for x
   x = 31,812,984,090,000/2,603,634
6. Step 6: Final answer
   x = 12,218,685.15