Finding the Third Proportional to 278.50 and 467.50

Step by Step Solution

1. Step 1: Write the proportion equation
   278.50 : 467.50 = 467.50 : x
2. Step 2: Convert to fraction form
   278.50/467.50 = 467.50/x
3. Step 3: Cross multiply
   278.50x = 467.50 × 467.50
4. Step 4: Simplify right side
   278.50x = 218,556.25
5. Step 5: Solve for x
   x = 218,556.25/278.50
6. Step 6: Final answer
   x = 784.76