Finding the Third Proportional to 111,238.50 and 230,362.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,238.50 : 230,362.50 = 230,362.50 : x
2. Step 2: Convert to fraction form
   111,238.50/230,362.50 = 230,362.50/x
3. Step 3: Cross multiply
   111,238.50x = 230,362.50 × 230,362.50
4. Step 4: Simplify right side
   111,238.50x = 53,066,881,406.25
5. Step 5: Solve for x
   x = 53,066,881,406.25/111,238.50
6. Step 6: Final answer
   x = 477,054.99