Finding the Third Proportional to 111,709.13 and 243,101.25

Step by Step Solution

1. Step 1: Write the proportion equation
   111,709.13 : 243,101.25 = 243,101.25 : x
2. Step 2: Convert to fraction form
   111,709.13/243,101.25 = 243,101.25/x
3. Step 3: Cross multiply
   111,709.13x = 243,101.25 × 243,101.25
4. Step 4: Simplify right side
   111,709.13x = 59,098,217,751.56
5. Step 5: Solve for x
   x = 59,098,217,751.56/111,709.13
6. Step 6: Final answer
   x = 529,036.62