Finding the Third Proportional to 12,315.66 and 19,108.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,315.66 : 19,108.69 = 19,108.69 : x
2. Step 2: Convert to fraction form
   12,315.66/19,108.69 = 19,108.69/x
3. Step 3: Cross multiply
   12,315.66x = 19,108.69 × 19,108.69
4. Step 4: Simplify right side
   12,315.66x = 365,141,937.97
5. Step 5: Solve for x
   x = 365,141,937.97/12,315.66
6. Step 6: Final answer
   x = 29,648.60