Finding the Third Proportional to 3,561,372 and 8,398,632

Step by Step Solution

1. Step 1: Write the proportion equation
   3,561,372 : 8,398,632 = 8,398,632 : x
2. Step 2: Convert to fraction form
   3,561,372/8,398,632 = 8,398,632/x
3. Step 3: Cross multiply
   3,561,372x = 8,398,632 × 8,398,632
4. Step 4: Simplify right side
   3,561,372x = 70,537,019,471,424
5. Step 5: Solve for x
   x = 70,537,019,471,424/3,561,372
6. Step 6: Final answer
   x = 19,806,136.36