Finding the Third Proportional to 655,592 and 989,384

Step by Step Solution

1. Step 1: Write the proportion equation
   655,592 : 989,384 = 989,384 : x
2. Step 2: Convert to fraction form
   655,592/989,384 = 989,384/x
3. Step 3: Cross multiply
   655,592x = 989,384 × 989,384
4. Step 4: Simplify right side
   655,592x = 978,880,699,456
5. Step 5: Solve for x
   x = 978,880,699,456/655,592
6. Step 6: Final answer
   x = 1,493,124.84