Finding the Third Proportional to 12,821.06 and 19,402.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,821.06 : 19,402.31 = 19,402.31 : x
2. Step 2: Convert to fraction form
   12,821.06/19,402.31 = 19,402.31/x
3. Step 3: Cross multiply
   12,821.06x = 19,402.31 × 19,402.31
4. Step 4: Simplify right side
   12,821.06x = 376,449,730.35
5. Step 5: Solve for x
   x = 376,449,730.35/12,821.06
6. Step 6: Final answer
   x = 29,361.82