Finding the Third Proportional to 3,954,272 and 8,633,408

Step by Step Solution

1. Step 1: Write the proportion equation
   3,954,272 : 8,633,408 = 8,633,408 : x
2. Step 2: Convert to fraction form
   3,954,272/8,633,408 = 8,633,408/x
3. Step 3: Cross multiply
   3,954,272x = 8,633,408 × 8,633,408
4. Step 4: Simplify right side
   3,954,272x = 74,535,733,694,464
5. Step 5: Solve for x
   x = 74,535,733,694,464/3,954,272
6. Step 6: Final answer
   x = 18,849,419.99