Finding the Third Proportional to 111,405.38 and 262,723.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,405.38 : 262,723.50 = 262,723.50 : x
2. Step 2: Convert to fraction form
   111,405.38/262,723.50 = 262,723.50/x
3. Step 3: Cross multiply
   111,405.38x = 262,723.50 × 262,723.50
4. Step 4: Simplify right side
   111,405.38x = 69,023,637,452.25
5. Step 5: Solve for x
   x = 69,023,637,452.25/111,405.38
6. Step 6: Final answer
   x = 619,571.88