Finding the Third Proportional to 103,216.75 and 215,796.50

Step by Step Solution

1. Step 1: Write the proportion equation
   103,216.75 : 215,796.50 = 215,796.50 : x
2. Step 2: Convert to fraction form
   103,216.75/215,796.50 = 215,796.50/x
3. Step 3: Cross multiply
   103,216.75x = 215,796.50 × 215,796.50
4. Step 4: Simplify right side
   103,216.75x = 46,568,129,412.25
5. Step 5: Solve for x
   x = 46,568,129,412.25/103,216.75
6. Step 6: Final answer
   x = 451,168.34