Finding the Third Proportional to 111,339 and 233,619

Step by Step Solution

1. Step 1: Write the proportion equation
   111,339 : 233,619 = 233,619 : x
2. Step 2: Convert to fraction form
   111,339/233,619 = 233,619/x
3. Step 3: Cross multiply
   111,339x = 233,619 × 233,619
4. Step 4: Simplify right side
   111,339x = 54,577,837,161
5. Step 5: Solve for x
   x = 54,577,837,161/111,339
6. Step 6: Final answer
   x = 490,195.14