Finding the Third Proportional to 111,296.63 and 262,462.31

Step by Step Solution

1. Step 1: Write the proportion equation
   111,296.63 : 262,462.31 = 262,462.31 : x
2. Step 2: Convert to fraction form
   111,296.63/262,462.31 = 262,462.31/x
3. Step 3: Cross multiply
   111,296.63x = 262,462.31 × 262,462.31
4. Step 4: Simplify right side
   111,296.63x = 68,886,465,482.85
5. Step 5: Solve for x
   x = 68,886,465,482.85/111,296.63
6. Step 6: Final answer
   x = 618,944.78