Finding the Third Proportional to 111,474 and 242,630

Step by Step Solution

1. Step 1: Write the proportion equation
   111,474 : 242,630 = 242,630 : x
2. Step 2: Convert to fraction form
   111,474/242,630 = 242,630/x
3. Step 3: Cross multiply
   111,474x = 242,630 × 242,630
4. Step 4: Simplify right side
   111,474x = 58,869,316,900
5. Step 5: Solve for x
   x = 58,869,316,900/111,474
6. Step 6: Final answer
   x = 528,099.08