Finding the Third Proportional to 255,259.50 and 536,640

Step by Step Solution

1. Step 1: Write the proportion equation
   255,259.50 : 536,640 = 536,640 : x
2. Step 2: Convert to fraction form
   255,259.50/536,640 = 536,640/x
3. Step 3: Cross multiply
   255,259.50x = 536,640 × 536,640
4. Step 4: Simplify right side
   255,259.50x = 287,982,489,600
5. Step 5: Solve for x
   x = 287,982,489,600/255,259.50
6. Step 6: Final answer
   x = 1,128,194.99