Finding the Third Proportional to 858,168 and 1,128,492

Step by Step Solution

1. Step 1: Write the proportion equation
   858,168 : 1,128,492 = 1,128,492 : x
2. Step 2: Convert to fraction form
   858,168/1,128,492 = 1,128,492/x
3. Step 3: Cross multiply
   858,168x = 1,128,492 × 1,128,492
4. Step 4: Simplify right side
   858,168x = 1,273,494,194,064
5. Step 5: Solve for x
   x = 1,273,494,194,064/858,168
6. Step 6: Final answer
   x = 1,483,968.40