Finding the Third Proportional to 111,930 and 243,338

Step by Step Solution

1. Step 1: Write the proportion equation
   111,930 : 243,338 = 243,338 : x
2. Step 2: Convert to fraction form
   111,930/243,338 = 243,338/x
3. Step 3: Cross multiply
   111,930x = 243,338 × 243,338
4. Step 4: Simplify right side
   111,930x = 59,213,382,244
5. Step 5: Solve for x
   x = 59,213,382,244/111,930
6. Step 6: Final answer
   x = 529,021.55