Finding the Third Proportional to 20,863,912 and 31,915,788

Step by Step Solution

1. Step 1: Write the proportion equation
   20,863,912 : 31,915,788 = 31,915,788 : x
2. Step 2: Convert to fraction form
   20,863,912/31,915,788 = 31,915,788/x
3. Step 3: Cross multiply
   20,863,912x = 31,915,788 × 31,915,788
4. Step 4: Simplify right side
   20,863,912x = 1,018,617,523,660,944
5. Step 5: Solve for x
   x = 1,018,617,523,660,944/20,863,912
6. Step 6: Final answer
   x = 48,821,981.40