Finding the Third Proportional to 51,207.50 and 111,390.50

Step by Step Solution

1. Step 1: Write the proportion equation
   51,207.50 : 111,390.50 = 111,390.50 : x
2. Step 2: Convert to fraction form
   51,207.50/111,390.50 = 111,390.50/x
3. Step 3: Cross multiply
   51,207.50x = 111,390.50 × 111,390.50
4. Step 4: Simplify right side
   51,207.50x = 12,407,843,490.25
5. Step 5: Solve for x
   x = 12,407,843,490.25/51,207.50
6. Step 6: Final answer
   x = 242,305.20