Finding the Third Proportional to 98,311.50 and 215,019

Step by Step Solution

1. Step 1: Write the proportion equation
   98,311.50 : 215,019 = 215,019 : x
2. Step 2: Convert to fraction form
   98,311.50/215,019 = 215,019/x
3. Step 3: Cross multiply
   98,311.50x = 215,019 × 215,019
4. Step 4: Simplify right side
   98,311.50x = 46,233,170,361
5. Step 5: Solve for x
   x = 46,233,170,361/98,311.50
6. Step 6: Final answer
   x = 470,272.25