Finding the Third Proportional to 12,808,106 and 19,810,678

Step by Step Solution

1. Step 1: Write the proportion equation
   12,808,106 : 19,810,678 = 19,810,678 : x
2. Step 2: Convert to fraction form
   12,808,106/19,810,678 = 19,810,678/x
3. Step 3: Cross multiply
   12,808,106x = 19,810,678 × 19,810,678
4. Step 4: Simplify right side
   12,808,106x = 392,462,962,819,684
5. Step 5: Solve for x
   x = 392,462,962,819,684/12,808,106
6. Step 6: Final answer
   x = 30,641,764.12