Finding the Third Proportional to 83,227.50 and 128,725.45

Step by Step Solution

1. Step 1: Write the proportion equation
   83,227.50 : 128,725.45 = 128,725.45 : x
2. Step 2: Convert to fraction form
   83,227.50/128,725.45 = 128,725.45/x
3. Step 3: Cross multiply
   83,227.50x = 128,725.45 × 128,725.45
4. Step 4: Simplify right side
   83,227.50x = 16,570,242,282.24
5. Step 5: Solve for x
   x = 16,570,242,282.24/83,227.50
6. Step 6: Final answer
   x = 199,095.76