Finding the Third Proportional to 13,275,990 and 20,036,109

Step by Step Solution

1. Step 1: Write the proportion equation
   13,275,990 : 20,036,109 = 20,036,109 : x
2. Step 2: Convert to fraction form
   13,275,990/20,036,109 = 20,036,109/x
3. Step 3: Cross multiply
   13,275,990x = 20,036,109 × 20,036,109
4. Step 4: Simplify right side
   13,275,990x = 401,445,663,859,881
5. Step 5: Solve for x
   x = 401,445,663,859,881/13,275,990
6. Step 6: Final answer
   x = 30,238,472.90