Finding the Third Proportional to 3,921,304 and 8,615,832

Step by Step Solution

1. Step 1: Write the proportion equation
   3,921,304 : 8,615,832 = 8,615,832 : x
2. Step 2: Convert to fraction form
   3,921,304/8,615,832 = 8,615,832/x
3. Step 3: Cross multiply
   3,921,304x = 8,615,832 × 8,615,832
4. Step 4: Simplify right side
   3,921,304x = 74,232,561,052,224
5. Step 5: Solve for x
   x = 74,232,561,052,224/3,921,304
6. Step 6: Final answer
   x = 18,930,580.50