Finding the Third Proportional to 262,453.50 and 542,403

Step by Step Solution

1. Step 1: Write the proportion equation
   262,453.50 : 542,403 = 542,403 : x
2. Step 2: Convert to fraction form
   262,453.50/542,403 = 542,403/x
3. Step 3: Cross multiply
   262,453.50x = 542,403 × 542,403
4. Step 4: Simplify right side
   262,453.50x = 294,201,014,409
5. Step 5: Solve for x
   x = 294,201,014,409/262,453.50
6. Step 6: Final answer
   x = 1,120,964.34