Finding the Third Proportional to 51,018.75 and 76,724

Step by Step Solution

1. Step 1: Write the proportion equation
   51,018.75 : 76,724 = 76,724 : x
2. Step 2: Convert to fraction form
   51,018.75/76,724 = 76,724/x
3. Step 3: Cross multiply
   51,018.75x = 76,724 × 76,724
4. Step 4: Simplify right side
   51,018.75x = 5,886,572,176
5. Step 5: Solve for x
   x = 5,886,572,176/51,018.75
6. Step 6: Final answer
   x = 115,380.56