Finding the Third Proportional to 581,683.50 and 869,005

Step by Step Solution

1. Step 1: Write the proportion equation
   581,683.50 : 869,005 = 869,005 : x
2. Step 2: Convert to fraction form
   581,683.50/869,005 = 869,005/x
3. Step 3: Cross multiply
   581,683.50x = 869,005 × 869,005
4. Step 4: Simplify right side
   581,683.50x = 755,169,690,025
5. Step 5: Solve for x
   x = 755,169,690,025/581,683.50
6. Step 6: Final answer
   x = 1,298,248.43