Finding the Third Proportional to 412,785 and 870,331.50

Step by Step Solution

1. Step 1: Write the proportion equation
   412,785 : 870,331.50 = 870,331.50 : x
2. Step 2: Convert to fraction form
   412,785/870,331.50 = 870,331.50/x
3. Step 3: Cross multiply
   412,785x = 870,331.50 × 870,331.50
4. Step 4: Simplify right side
   412,785x = 757,476,919,892.25
5. Step 5: Solve for x
   x = 757,476,919,892.25/412,785
6. Step 6: Final answer
   x = 1,835,039.84