Finding the Third Proportional to 548,359.50 and 817,956

Step by Step Solution

1. Step 1: Write the proportion equation
   548,359.50 : 817,956 = 817,956 : x
2. Step 2: Convert to fraction form
   548,359.50/817,956 = 817,956/x
3. Step 3: Cross multiply
   548,359.50x = 817,956 × 817,956
4. Step 4: Simplify right side
   548,359.50x = 669,052,017,936
5. Step 5: Solve for x
   x = 669,052,017,936/548,359.50
6. Step 6: Final answer
   x = 1,220,097.43