Finding the Third Proportional to 12,922,354 and 20,006,640

Step by Step Solution

1. Step 1: Write the proportion equation
   12,922,354 : 20,006,640 = 20,006,640 : x
2. Step 2: Convert to fraction form
   12,922,354/20,006,640 = 20,006,640/x
3. Step 3: Cross multiply
   12,922,354x = 20,006,640 × 20,006,640
4. Step 4: Simplify right side
   12,922,354x = 400,265,644,089,600
5. Step 5: Solve for x
   x = 400,265,644,089,600/12,922,354
6. Step 6: Final answer
   x = 30,974,669.48