Finding the Third Proportional to 407,082 and 870,185.50

Step by Step Solution

1. Step 1: Write the proportion equation
   407,082 : 870,185.50 = 870,185.50 : x
2. Step 2: Convert to fraction form
   407,082/870,185.50 = 870,185.50/x
3. Step 3: Cross multiply
   407,082x = 870,185.50 × 870,185.50
4. Step 4: Simplify right side
   407,082x = 757,222,804,410.25
5. Step 5: Solve for x
   x = 757,222,804,410.25/407,082
6. Step 6: Final answer
   x = 1,860,123.52