Finding the Third Proportional to 21,123 and 28,266.75

Step by Step Solution

1. Step 1: Write the proportion equation
   21,123 : 28,266.75 = 28,266.75 : x
2. Step 2: Convert to fraction form
   21,123/28,266.75 = 28,266.75/x
3. Step 3: Cross multiply
   21,123x = 28,266.75 × 28,266.75
4. Step 4: Simplify right side
   21,123x = 799,009,155.56
5. Step 5: Solve for x
   x = 799,009,155.56/21,123
6. Step 6: Final answer
   x = 37,826.50