Finding the Third Proportional to 509.25 and 1,036.50

Step by Step Solution

1. Step 1: Write the proportion equation
   509.25 : 1,036.50 = 1,036.50 : x
2. Step 2: Convert to fraction form
   509.25/1,036.50 = 1,036.50/x
3. Step 3: Cross multiply
   509.25x = 1,036.50 × 1,036.50
4. Step 4: Simplify right side
   509.25x = 1,074,332.25
5. Step 5: Solve for x
   x = 1,074,332.25/509.25
6. Step 6: Final answer
   x = 2,109.64