Finding the Third Proportional to 3,561,324 and 8,398,512

Step by Step Solution

1. Step 1: Write the proportion equation
   3,561,324 : 8,398,512 = 8,398,512 : x
2. Step 2: Convert to fraction form
   3,561,324/8,398,512 = 8,398,512/x
3. Step 3: Cross multiply
   3,561,324x = 8,398,512 × 8,398,512
4. Step 4: Simplify right side
   3,561,324x = 70,535,003,814,144
5. Step 5: Solve for x
   x = 70,535,003,814,144/3,561,324
6. Step 6: Final answer
   x = 19,805,837.33