Finding the Third Proportional to 111,340 and 233,621

Step by Step Solution

1. Step 1: Write the proportion equation
   111,340 : 233,621 = 233,621 : x
2. Step 2: Convert to fraction form
   111,340/233,621 = 233,621/x
3. Step 3: Cross multiply
   111,340x = 233,621 × 233,621
4. Step 4: Simplify right side
   111,340x = 54,578,771,641
5. Step 5: Solve for x
   x = 54,578,771,641/111,340
6. Step 6: Final answer
   x = 490,199.13