Finding the Third Proportional to 243,859.50 and 499,018.50

Step by Step Solution

1. Step 1: Write the proportion equation
   243,859.50 : 499,018.50 = 499,018.50 : x
2. Step 2: Convert to fraction form
   243,859.50/499,018.50 = 499,018.50/x
3. Step 3: Cross multiply
   243,859.50x = 499,018.50 × 499,018.50
4. Step 4: Simplify right side
   243,859.50x = 249,019,463,342.25
5. Step 5: Solve for x
   x = 249,019,463,342.25/243,859.50
6. Step 6: Final answer
   x = 1,021,159.57