Finding the Third Proportional to 12,121.31 and 26,154.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,121.31 : 26,154.56 = 26,154.56 : x
2. Step 2: Convert to fraction form
   12,121.31/26,154.56 = 26,154.56/x
3. Step 3: Cross multiply
   12,121.31x = 26,154.56 × 26,154.56
4. Step 4: Simplify right side
   12,121.31x = 684,061,139.57
5. Step 5: Solve for x
   x = 684,061,139.57/12,121.31
6. Step 6: Final answer
   x = 56,434.58