Finding the Third Proportional to 12,808,115 and 19,810,690

Step by Step Solution

1. Step 1: Write the proportion equation
   12,808,115 : 19,810,690 = 19,810,690 : x
2. Step 2: Convert to fraction form
   12,808,115/19,810,690 = 19,810,690/x
3. Step 3: Cross multiply
   12,808,115x = 19,810,690 × 19,810,690
4. Step 4: Simplify right side
   12,808,115x = 392,463,438,276,100
5. Step 5: Solve for x
   x = 392,463,438,276,100/12,808,115
6. Step 6: Final answer
   x = 30,641,779.71