Finding the Third Proportional to 20,619.75 and 45,978

Step by Step Solution

1. Step 1: Write the proportion equation
   20,619.75 : 45,978 = 45,978 : x
2. Step 2: Convert to fraction form
   20,619.75/45,978 = 45,978/x
3. Step 3: Cross multiply
   20,619.75x = 45,978 × 45,978
4. Step 4: Simplify right side
   20,619.75x = 2,113,976,484
5. Step 5: Solve for x
   x = 2,113,976,484/20,619.75
6. Step 6: Final answer
   x = 102,521.93