Finding the Third Proportional to 122,028.50 and 250,003.50

Step by Step Solution

1. Step 1: Write the proportion equation
   122,028.50 : 250,003.50 = 250,003.50 : x
2. Step 2: Convert to fraction form
   122,028.50/250,003.50 = 250,003.50/x
3. Step 3: Cross multiply
   122,028.50x = 250,003.50 × 250,003.50
4. Step 4: Simplify right side
   122,028.50x = 62,501,750,012.25
5. Step 5: Solve for x
   x = 62,501,750,012.25/122,028.50
6. Step 6: Final answer
   x = 512,189.78