Finding the Third Proportional to 200,272.50 and 428,976

Step by Step Solution

1. Step 1: Write the proportion equation
   200,272.50 : 428,976 = 428,976 : x
2. Step 2: Convert to fraction form
   200,272.50/428,976 = 428,976/x
3. Step 3: Cross multiply
   200,272.50x = 428,976 × 428,976
4. Step 4: Simplify right side
   200,272.50x = 184,020,408,576
5. Step 5: Solve for x
   x = 184,020,408,576/200,272.50
6. Step 6: Final answer
   x = 918,850.11