Finding the Third Proportional to 236,401.50 and 512,128.50

Step by Step Solution

1. Step 1: Write the proportion equation
   236,401.50 : 512,128.50 = 512,128.50 : x
2. Step 2: Convert to fraction form
   236,401.50/512,128.50 = 512,128.50/x
3. Step 3: Cross multiply
   236,401.50x = 512,128.50 × 512,128.50
4. Step 4: Simplify right side
   236,401.50x = 262,275,600,512.25
5. Step 5: Solve for x
   x = 262,275,600,512.25/236,401.50
6. Step 6: Final answer
   x = 1,109,449.82