Finding the Third Proportional to 122,956.50 and 253,579.50

Step by Step Solution

1. Step 1: Write the proportion equation
   122,956.50 : 253,579.50 = 253,579.50 : x
2. Step 2: Convert to fraction form
   122,956.50/253,579.50 = 253,579.50/x
3. Step 3: Cross multiply
   122,956.50x = 253,579.50 × 253,579.50
4. Step 4: Simplify right side
   122,956.50x = 64,302,562,820.25
5. Step 5: Solve for x
   x = 64,302,562,820.25/122,956.50
6. Step 6: Final answer
   x = 522,970.02