Finding the Third Proportional to 235,440 and 512,911.50

Step by Step Solution

1. Step 1: Write the proportion equation
   235,440 : 512,911.50 = 512,911.50 : x
2. Step 2: Convert to fraction form
   235,440/512,911.50 = 512,911.50/x
3. Step 3: Cross multiply
   235,440x = 512,911.50 × 512,911.50
4. Step 4: Simplify right side
   235,440x = 263,078,206,832.25
5. Step 5: Solve for x
   x = 263,078,206,832.25/235,440
6. Step 6: Final answer
   x = 1,117,389.60