Finding the Third Proportional to 12,808,140 and 19,810,722

Step by Step Solution

1. Step 1: Write the proportion equation
   12,808,140 : 19,810,722 = 19,810,722 : x
2. Step 2: Convert to fraction form
   12,808,140/19,810,722 = 19,810,722/x
3. Step 3: Cross multiply
   12,808,140x = 19,810,722 × 19,810,722
4. Step 4: Simplify right side
   12,808,140x = 392,464,706,161,284
5. Step 5: Solve for x
   x = 392,464,706,161,284/12,808,140
6. Step 6: Final answer
   x = 30,641,818.89