Finding the Third Proportional to 8,593,920 and 12,428,308

Step by Step Solution

1. Step 1: Write the proportion equation
   8,593,920 : 12,428,308 = 12,428,308 : x
2. Step 2: Convert to fraction form
   8,593,920/12,428,308 = 12,428,308/x
3. Step 3: Cross multiply
   8,593,920x = 12,428,308 × 12,428,308
4. Step 4: Simplify right side
   8,593,920x = 154,462,839,742,864
5. Step 5: Solve for x
   x = 154,462,839,742,864/8,593,920
6. Step 6: Final answer
   x = 17,973,502.17