Finding the Third Proportional to 7,710 and 18,019.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,710 : 18,019.50 = 18,019.50 : x
2. Step 2: Convert to fraction form
   7,710/18,019.50 = 18,019.50/x
3. Step 3: Cross multiply
   7,710x = 18,019.50 × 18,019.50
4. Step 4: Simplify right side
   7,710x = 324,702,380.25
5. Step 5: Solve for x
   x = 324,702,380.25/7,710
6. Step 6: Final answer
   x = 42,114.45