Finding the Third Proportional to 407,080 and 870,182.50

Step by Step Solution

1. Step 1: Write the proportion equation
   407,080 : 870,182.50 = 870,182.50 : x
2. Step 2: Convert to fraction form
   407,080/870,182.50 = 870,182.50/x
3. Step 3: Cross multiply
   407,080x = 870,182.50 × 870,182.50
4. Step 4: Simplify right side
   407,080x = 757,217,583,306.25
5. Step 5: Solve for x
   x = 757,217,583,306.25/407,080
6. Step 6: Final answer
   x = 1,860,119.84