Finding the Third Proportional to 407,119.50 and 870,147

Step by Step Solution

1. Step 1: Write the proportion equation
   407,119.50 : 870,147 = 870,147 : x
2. Step 2: Convert to fraction form
   407,119.50/870,147 = 870,147/x
3. Step 3: Cross multiply
   407,119.50x = 870,147 × 870,147
4. Step 4: Simplify right side
   407,119.50x = 757,155,801,609
5. Step 5: Solve for x
   x = 757,155,801,609/407,119.50
6. Step 6: Final answer
   x = 1,859,787.61