Finding the Third Proportional to 12,808,108 and 19,810,681

Step by Step Solution

1. Step 1: Write the proportion equation
   12,808,108 : 19,810,681 = 19,810,681 : x
2. Step 2: Convert to fraction form
   12,808,108/19,810,681 = 19,810,681/x
3. Step 3: Cross multiply
   12,808,108x = 19,810,681 × 19,810,681
4. Step 4: Simplify right side
   12,808,108x = 392,463,081,683,761
5. Step 5: Solve for x
   x = 392,463,081,683,761/12,808,108
6. Step 6: Final answer
   x = 30,641,768.61