Finding the Third Proportional to 42,219.25 and 65,885

Step by Step Solution

1. Step 1: Write the proportion equation
   42,219.25 : 65,885 = 65,885 : x
2. Step 2: Convert to fraction form
   42,219.25/65,885 = 65,885/x
3. Step 3: Cross multiply
   42,219.25x = 65,885 × 65,885
4. Step 4: Simplify right side
   42,219.25x = 4,340,833,225
5. Step 5: Solve for x
   x = 4,340,833,225/42,219.25
6. Step 6: Final answer
   x = 102,816.45