Finding the Third Proportional to 12,808,146 and 19,810,737

Step by Step Solution

1. Step 1: Write the proportion equation
   12,808,146 : 19,810,737 = 19,810,737 : x
2. Step 2: Convert to fraction form
   12,808,146/19,810,737 = 19,810,737/x
3. Step 3: Cross multiply
   12,808,146x = 19,810,737 × 19,810,737
4. Step 4: Simplify right side
   12,808,146x = 392,465,300,483,169
5. Step 5: Solve for x
   x = 392,465,300,483,169/12,808,146
6. Step 6: Final answer
   x = 30,641,850.93