Finding the Third Proportional to 19,697,378 and 31,466,988

Step by Step Solution

1. Step 1: Write the proportion equation
   19,697,378 : 31,466,988 = 31,466,988 : x
2. Step 2: Convert to fraction form
   19,697,378/31,466,988 = 31,466,988/x
3. Step 3: Cross multiply
   19,697,378x = 31,466,988 × 31,466,988
4. Step 4: Simplify right side
   19,697,378x = 990,171,333,792,144
5. Step 5: Solve for x
   x = 990,171,333,792,144/19,697,378
6. Step 6: Final answer
   x = 50,269,194.90