Finding the Third Proportional to 574,819.50 and 870,181.50

Step by Step Solution

1. Step 1: Write the proportion equation
   574,819.50 : 870,181.50 = 870,181.50 : x
2. Step 2: Convert to fraction form
   574,819.50/870,181.50 = 870,181.50/x
3. Step 3: Cross multiply
   574,819.50x = 870,181.50 × 870,181.50
4. Step 4: Simplify right side
   574,819.50x = 757,215,842,942.25
5. Step 5: Solve for x
   x = 757,215,842,942.25/574,819.50
6. Step 6: Final answer
   x = 1,317,310.64