Finding the Third Proportional to 13,443,660 and 20,663,874

Step by Step Solution

1. Step 1: Write the proportion equation
   13,443,660 : 20,663,874 = 20,663,874 : x
2. Step 2: Convert to fraction form
   13,443,660/20,663,874 = 20,663,874/x
3. Step 3: Cross multiply
   13,443,660x = 20,663,874 × 20,663,874
4. Step 4: Simplify right side
   13,443,660x = 426,995,688,687,876
5. Step 5: Solve for x
   x = 426,995,688,687,876/13,443,660
6. Step 6: Final answer
   x = 31,761,863.12