Finding the Third Proportional to 609.50 and 929.50

Step by Step Solution

1. Step 1: Write the proportion equation
   609.50 : 929.50 = 929.50 : x
2. Step 2: Convert to fraction form
   609.50/929.50 = 929.50/x
3. Step 3: Cross multiply
   609.50x = 929.50 × 929.50
4. Step 4: Simplify right side
   609.50x = 863,970.25
5. Step 5: Solve for x
   x = 863,970.25/609.50
6. Step 6: Final answer
   x = 1,417.51