Finding the Third Proportional to 647,389 and 980,077

Step by Step Solution

1. Step 1: Write the proportion equation
   647,389 : 980,077 = 980,077 : x
2. Step 2: Convert to fraction form
   647,389/980,077 = 980,077/x
3. Step 3: Cross multiply
   647,389x = 980,077 × 980,077
4. Step 4: Simplify right side
   647,389x = 960,550,925,929
5. Step 5: Solve for x
   x = 960,550,925,929/647,389
6. Step 6: Final answer
   x = 1,483,730.69