Finding the Third Proportional to 20,993,958 and 31,381,640

Step by Step Solution

1. Step 1: Write the proportion equation
   20,993,958 : 31,381,640 = 31,381,640 : x
2. Step 2: Convert to fraction form
   20,993,958/31,381,640 = 31,381,640/x
3. Step 3: Cross multiply
   20,993,958x = 31,381,640 × 31,381,640
4. Step 4: Simplify right side
   20,993,958x = 984,807,329,089,600
5. Step 5: Solve for x
   x = 984,807,329,089,600/20,993,958
6. Step 6: Final answer
   x = 46,909,083.51