Finding the Third Proportional to 111,400.63 and 231,981.38

Step by Step Solution

1. Step 1: Write the proportion equation
   111,400.63 : 231,981.38 = 231,981.38 : x
2. Step 2: Convert to fraction form
   111,400.63/231,981.38 = 231,981.38/x
3. Step 3: Cross multiply
   111,400.63x = 231,981.38 × 231,981.38
4. Step 4: Simplify right side
   111,400.63x = 53,815,358,346.89
5. Step 5: Solve for x
   x = 53,815,358,346.89/111,400.63
6. Step 6: Final answer
   x = 483,079.50