Finding the Third Proportional to 20,878,806 and 31,942,242

Step by Step Solution

1. Step 1: Write the proportion equation
   20,878,806 : 31,942,242 = 31,942,242 : x
2. Step 2: Convert to fraction form
   20,878,806/31,942,242 = 31,942,242/x
3. Step 3: Cross multiply
   20,878,806x = 31,942,242 × 31,942,242
4. Step 4: Simplify right side
   20,878,806x = 1,020,306,823,986,564
5. Step 5: Solve for x
   x = 1,020,306,823,986,564/20,878,806
6. Step 6: Final answer
   x = 48,868,063.81