Finding the Third Proportional to 12,810 and 19,762

Step by Step Solution

1. Step 1: Write the proportion equation
   12,810 : 19,762 = 19,762 : x
2. Step 2: Convert to fraction form
   12,810/19,762 = 19,762/x
3. Step 3: Cross multiply
   12,810x = 19,762 × 19,762
4. Step 4: Simplify right side
   12,810x = 390,536,644
5. Step 5: Solve for x
   x = 390,536,644/12,810
6. Step 6: Final answer
   x = 30,486.86