Finding the Third Proportional to 120,736 and 262,231.50

Step by Step Solution

1. Step 1: Write the proportion equation
   120,736 : 262,231.50 = 262,231.50 : x
2. Step 2: Convert to fraction form
   120,736/262,231.50 = 262,231.50/x
3. Step 3: Cross multiply
   120,736x = 262,231.50 × 262,231.50
4. Step 4: Simplify right side
   120,736x = 68,765,359,592.25
5. Step 5: Solve for x
   x = 68,765,359,592.25/120,736
6. Step 6: Final answer
   x = 569,551.41