Finding the Third Proportional to 9,161,647,707,728 and 19,931,807,295,280

Step by Step Solution

1. Step 1: Write the proportion equation
   9,161,647,707,728 : 19,931,807,295,280 = 19,931,807,295,280 : x
2. Step 2: Convert to fraction form
   9,161,647,707,728/19,931,807,295,280 = 19,931,807,295,280/x
3. Step 3: Cross multiply
   9,161,647,707,728x = 19,931,807,295,280 × 19,931,807,295,280
4. Step 4: Simplify right side
   9,161,647,707,728x = 397,276,942,056,177,035,617,763,328
5. Step 5: Solve for x
   x = 397,276,942,056,177,035,617,763,328/9,161,647,707,728
6. Step 6: Final answer
   x = 43,363,045,025,303.41