Finding the Third Proportional to 3,994,428 and 8,736,168

Step by Step Solution

1. Step 1: Write the proportion equation
   3,994,428 : 8,736,168 = 8,736,168 : x
2. Step 2: Convert to fraction form
   3,994,428/8,736,168 = 8,736,168/x
3. Step 3: Cross multiply
   3,994,428x = 8,736,168 × 8,736,168
4. Step 4: Simplify right side
   3,994,428x = 76,320,631,324,224
5. Step 5: Solve for x
   x = 76,320,631,324,224/3,994,428
6. Step 6: Final answer
   x = 19,106,773.57