Finding the Third Proportional to 258,244.50 and 562,218

Step by Step Solution

1. Step 1: Write the proportion equation
   258,244.50 : 562,218 = 562,218 : x
2. Step 2: Convert to fraction form
   258,244.50/562,218 = 562,218/x
3. Step 3: Cross multiply
   258,244.50x = 562,218 × 562,218
4. Step 4: Simplify right side
   258,244.50x = 316,089,079,524
5. Step 5: Solve for x
   x = 316,089,079,524/258,244.50
6. Step 6: Final answer
   x = 1,223,991.53