Finding the Third Proportional to 13,108,976 and 20,519,128

Step by Step Solution

1. Step 1: Write the proportion equation
   13,108,976 : 20,519,128 = 20,519,128 : x
2. Step 2: Convert to fraction form
   13,108,976/20,519,128 = 20,519,128/x
3. Step 3: Cross multiply
   13,108,976x = 20,519,128 × 20,519,128
4. Step 4: Simplify right side
   13,108,976x = 421,034,613,880,384
5. Step 5: Solve for x
   x = 421,034,613,880,384/13,108,976
6. Step 6: Final answer
   x = 32,118,039.87