Finding the Third Proportional to 42,960.50 and 65,724.75

Step by Step Solution

1. Step 1: Write the proportion equation
   42,960.50 : 65,724.75 = 65,724.75 : x
2. Step 2: Convert to fraction form
   42,960.50/65,724.75 = 65,724.75/x
3. Step 3: Cross multiply
   42,960.50x = 65,724.75 × 65,724.75
4. Step 4: Simplify right side
   42,960.50x = 4,319,742,762.56
5. Step 5: Solve for x
   x = 4,319,742,762.56/42,960.50
6. Step 6: Final answer
   x = 100,551.50