Finding the Third Proportional to 581,684.50 and 869,006.50

Step by Step Solution

1. Step 1: Write the proportion equation
   581,684.50 : 869,006.50 = 869,006.50 : x
2. Step 2: Convert to fraction form
   581,684.50/869,006.50 = 869,006.50/x
3. Step 3: Cross multiply
   581,684.50x = 869,006.50 × 869,006.50
4. Step 4: Simplify right side
   581,684.50x = 755,172,297,042.25
5. Step 5: Solve for x
   x = 755,172,297,042.25/581,684.50
6. Step 6: Final answer
   x = 1,298,250.68