Finding the Third Proportional to 12,808,120 and 19,810,698

Step by Step Solution

1. Step 1: Write the proportion equation
   12,808,120 : 19,810,698 = 19,810,698 : x
2. Step 2: Convert to fraction form
   12,808,120/19,810,698 = 19,810,698/x
3. Step 3: Cross multiply
   12,808,120x = 19,810,698 × 19,810,698
4. Step 4: Simplify right side
   12,808,120x = 392,463,755,247,204
5. Step 5: Solve for x
   x = 392,463,755,247,204/12,808,120
6. Step 6: Final answer
   x = 30,641,792.49