Finding the Third Proportional to 236,900.50 and 518,086.50

Step by Step Solution

1. Step 1: Write the proportion equation
   236,900.50 : 518,086.50 = 518,086.50 : x
2. Step 2: Convert to fraction form
   236,900.50/518,086.50 = 518,086.50/x
3. Step 3: Cross multiply
   236,900.50x = 518,086.50 × 518,086.50
4. Step 4: Simplify right side
   236,900.50x = 268,413,621,482.25
5. Step 5: Solve for x
   x = 268,413,621,482.25/236,900.50
6. Step 6: Final answer
   x = 1,133,022.60