Finding the Third Proportional to 647,698 and 980,583

Step by Step Solution

1. Step 1: Write the proportion equation
   647,698 : 980,583 = 980,583 : x
2. Step 2: Convert to fraction form
   647,698/980,583 = 980,583/x
3. Step 3: Cross multiply
   647,698x = 980,583 × 980,583
4. Step 4: Simplify right side
   647,698x = 961,543,019,889
5. Step 5: Solve for x
   x = 961,543,019,889/647,698
6. Step 6: Final answer
   x = 1,484,554.56