Finding the Third Proportional to 41,978 and 64,987

Step by Step Solution

1. Step 1: Write the proportion equation
   41,978 : 64,987 = 64,987 : x
2. Step 2: Convert to fraction form
   41,978/64,987 = 64,987/x
3. Step 3: Cross multiply
   41,978x = 64,987 × 64,987
4. Step 4: Simplify right side
   41,978x = 4,223,310,169
5. Step 5: Solve for x
   x = 4,223,310,169/41,978
6. Step 6: Final answer
   x = 100,607.70