Finding the Third Proportional to 208,131.75 and 451,255.50

Step by Step Solution

1. Step 1: Write the proportion equation
   208,131.75 : 451,255.50 = 451,255.50 : x
2. Step 2: Convert to fraction form
   208,131.75/451,255.50 = 451,255.50/x
3. Step 3: Cross multiply
   208,131.75x = 451,255.50 × 451,255.50
4. Step 4: Simplify right side
   208,131.75x = 203,631,526,280.25
5. Step 5: Solve for x
   x = 203,631,526,280.25/208,131.75
6. Step 6: Final answer
   x = 978,378.00