Finding the Third Proportional to 42,619 and 63,928

Step by Step Solution

1. Step 1: Write the proportion equation
   42,619 : 63,928 = 63,928 : x
2. Step 2: Convert to fraction form
   42,619/63,928 = 63,928/x
3. Step 3: Cross multiply
   42,619x = 63,928 × 63,928
4. Step 4: Simplify right side
   42,619x = 4,086,789,184
5. Step 5: Solve for x
   x = 4,086,789,184/42,619
6. Step 6: Final answer
   x = 95,891.25