Finding the Third Proportional to 13,426,086 and 20,648,824

Step by Step Solution

1. Step 1: Write the proportion equation
   13,426,086 : 20,648,824 = 20,648,824 : x
2. Step 2: Convert to fraction form
   13,426,086/20,648,824 = 20,648,824/x
3. Step 3: Cross multiply
   13,426,086x = 20,648,824 × 20,648,824
4. Step 4: Simplify right side
   13,426,086x = 426,373,932,582,976
5. Step 5: Solve for x
   x = 426,373,932,582,976/13,426,086
6. Step 6: Final answer
   x = 31,757,128.07