Finding the Third Proportional to 407,868 and 874,765.50

Step by Step Solution

1. Step 1: Write the proportion equation
   407,868 : 874,765.50 = 874,765.50 : x
2. Step 2: Convert to fraction form
   407,868/874,765.50 = 874,765.50/x
3. Step 3: Cross multiply
   407,868x = 874,765.50 × 874,765.50
4. Step 4: Simplify right side
   407,868x = 765,214,679,990.25
5. Step 5: Solve for x
   x = 765,214,679,990.25/407,868
6. Step 6: Final answer
   x = 1,876,133.16