Finding the Third Proportional to 637,790 and 987,494

Step by Step Solution

1. Step 1: Write the proportion equation
   637,790 : 987,494 = 987,494 : x
2. Step 2: Convert to fraction form
   637,790/987,494 = 987,494/x
3. Step 3: Cross multiply
   637,790x = 987,494 × 987,494
4. Step 4: Simplify right side
   637,790x = 975,144,400,036
5. Step 5: Solve for x
   x = 975,144,400,036/637,790
6. Step 6: Final answer
   x = 1,528,942.76