Finding the Third Proportional to 111,698 and 243,468

Step by Step Solution

1. Step 1: Write the proportion equation
   111,698 : 243,468 = 243,468 : x
2. Step 2: Convert to fraction form
   111,698/243,468 = 243,468/x
3. Step 3: Cross multiply
   111,698x = 243,468 × 243,468
4. Step 4: Simplify right side
   111,698x = 59,276,667,024
5. Step 5: Solve for x
   x = 59,276,667,024/111,698
6. Step 6: Final answer
   x = 530,686.91