Finding the Third Proportional to 12,791.25 and 19,963.13

Step by Step Solution

1. Step 1: Write the proportion equation
   12,791.25 : 19,963.13 = 19,963.13 : x
2. Step 2: Convert to fraction form
   12,791.25/19,963.13 = 19,963.13/x
3. Step 3: Cross multiply
   12,791.25x = 19,963.13 × 19,963.13
4. Step 4: Simplify right side
   12,791.25x = 398,526,359.77
5. Step 5: Solve for x
   x = 398,526,359.77/12,791.25
6. Step 6: Final answer
   x = 31,156.17