Finding the Third Proportional to 245,085.75 and 512,617.50

Step by Step Solution

1. Step 1: Write the proportion equation
   245,085.75 : 512,617.50 = 512,617.50 : x
2. Step 2: Convert to fraction form
   245,085.75/512,617.50 = 512,617.50/x
3. Step 3: Cross multiply
   245,085.75x = 512,617.50 × 512,617.50
4. Step 4: Simplify right side
   245,085.75x = 262,776,701,306.25
5. Step 5: Solve for x
   x = 262,776,701,306.25/245,085.75
6. Step 6: Final answer
   x = 1,072,182.70