Finding the Third Proportional to 12,158 and 26,510

Step by Step Solution

1. Step 1: Write the proportion equation
   12,158 : 26,510 = 26,510 : x
2. Step 2: Convert to fraction form
   12,158/26,510 = 26,510/x
3. Step 3: Cross multiply
   12,158x = 26,510 × 26,510
4. Step 4: Simplify right side
   12,158x = 702,780,100
5. Step 5: Solve for x
   x = 702,780,100/12,158
6. Step 6: Final answer
   x = 57,803.92