Finding the Third Proportional to 20,878,954 and 31,942,456

Step by Step Solution

1. Step 1: Write the proportion equation
   20,878,954 : 31,942,456 = 31,942,456 : x
2. Step 2: Convert to fraction form
   20,878,954/31,942,456 = 31,942,456/x
3. Step 3: Cross multiply
   20,878,954x = 31,942,456 × 31,942,456
4. Step 4: Simplify right side
   20,878,954x = 1,020,320,495,311,936
5. Step 5: Solve for x
   x = 1,020,320,495,311,936/20,878,954
6. Step 6: Final answer
   x = 48,868,372.20