Finding the Third Proportional to 12,156.64 and 26,517.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,156.64 : 26,517.38 = 26,517.38 : x
2. Step 2: Convert to fraction form
   12,156.64/26,517.38 = 26,517.38/x
3. Step 3: Cross multiply
   12,156.64x = 26,517.38 × 26,517.38
4. Step 4: Simplify right side
   12,156.64x = 703,171,176.89
5. Step 5: Solve for x
   x = 703,171,176.89/12,156.64
6. Step 6: Final answer
   x = 57,842.54