Finding the Third Proportional to 25,812 and 40,890

Step by Step Solution

1. Step 1: Write the proportion equation
   25,812 : 40,890 = 40,890 : x
2. Step 2: Convert to fraction form
   25,812/40,890 = 40,890/x
3. Step 3: Cross multiply
   25,812x = 40,890 × 40,890
4. Step 4: Simplify right side
   25,812x = 1,671,992,100
5. Step 5: Solve for x
   x = 1,671,992,100/25,812
6. Step 6: Final answer
   x = 64,775.77