Finding the Third Proportional to 111,913 and 240,390.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,913 : 240,390.50 = 240,390.50 : x
2. Step 2: Convert to fraction form
   111,913/240,390.50 = 240,390.50/x
3. Step 3: Cross multiply
   111,913x = 240,390.50 × 240,390.50
4. Step 4: Simplify right side
   111,913x = 57,787,592,490.25
5. Step 5: Solve for x
   x = 57,787,592,490.25/111,913
6. Step 6: Final answer
   x = 516,361.75