Finding the Third Proportional to 12,942,108 and 20,603,417

Step by Step Solution

1. Step 1: Write the proportion equation
   12,942,108 : 20,603,417 = 20,603,417 : x
2. Step 2: Convert to fraction form
   12,942,108/20,603,417 = 20,603,417/x
3. Step 3: Cross multiply
   12,942,108x = 20,603,417 × 20,603,417
4. Step 4: Simplify right side
   12,942,108x = 424,500,792,075,889
5. Step 5: Solve for x
   x = 424,500,792,075,889/12,942,108
6. Step 6: Final answer
   x = 32,799,972.93