Finding the Third Proportional to 259,434 and 563,154.50

Step by Step Solution

1. Step 1: Write the proportion equation
   259,434 : 563,154.50 = 563,154.50 : x
2. Step 2: Convert to fraction form
   259,434/563,154.50 = 563,154.50/x
3. Step 3: Cross multiply
   259,434x = 563,154.50 × 563,154.50
4. Step 4: Simplify right side
   259,434x = 317,142,990,870.25
5. Step 5: Solve for x
   x = 317,142,990,870.25/259,434
6. Step 6: Final answer
   x = 1,222,441.90