Finding the Third Proportional to 12,121.31 and 25,340.63

Step by Step Solution

1. Step 1: Write the proportion equation
   12,121.31 : 25,340.63 = 25,340.63 : x
2. Step 2: Convert to fraction form
   12,121.31/25,340.63 = 25,340.63/x
3. Step 3: Cross multiply
   12,121.31x = 25,340.63 × 25,340.63
4. Step 4: Simplify right side
   12,121.31x = 642,147,275.39
5. Step 5: Solve for x
   x = 642,147,275.39/12,121.31
6. Step 6: Final answer
   x = 52,976.71