Finding the Third Proportional to 26,379 and 57,123

Step by Step Solution

1. Step 1: Write the proportion equation
   26,379 : 57,123 = 57,123 : x
2. Step 2: Convert to fraction form
   26,379/57,123 = 57,123/x
3. Step 3: Cross multiply
   26,379x = 57,123 × 57,123
4. Step 4: Simplify right side
   26,379x = 3,263,037,129
5. Step 5: Solve for x
   x = 3,263,037,129/26,379
6. Step 6: Final answer
   x = 123,698.29