Finding the Third Proportional to 581,663 and 869,020

Step by Step Solution

1. Step 1: Write the proportion equation
   581,663 : 869,020 = 869,020 : x
2. Step 2: Convert to fraction form
   581,663/869,020 = 869,020/x
3. Step 3: Cross multiply
   581,663x = 869,020 × 869,020
4. Step 4: Simplify right side
   581,663x = 755,195,760,400
5. Step 5: Solve for x
   x = 755,195,760,400/581,663
6. Step 6: Final answer
   x = 1,298,339.00