Finding the Third Proportional to 222,312 and 487,834

Step by Step Solution

1. Step 1: Write the proportion equation
   222,312 : 487,834 = 487,834 : x
2. Step 2: Convert to fraction form
   222,312/487,834 = 487,834/x
3. Step 3: Cross multiply
   222,312x = 487,834 × 487,834
4. Step 4: Simplify right side
   222,312x = 237,982,011,556
5. Step 5: Solve for x
   x = 237,982,011,556/222,312
6. Step 6: Final answer
   x = 1,070,486.58