Finding the Third Proportional to 103,218.75 and 145,350

Step by Step Solution

1. Step 1: Write the proportion equation
   103,218.75 : 145,350 = 145,350 : x
2. Step 2: Convert to fraction form
   103,218.75/145,350 = 145,350/x
3. Step 3: Cross multiply
   103,218.75x = 145,350 × 145,350
4. Step 4: Simplify right side
   103,218.75x = 21,126,622,500
5. Step 5: Solve for x
   x = 21,126,622,500/103,218.75
6. Step 6: Final answer
   x = 204,678.15