Finding the Third Proportional to 215,170 and 472,804

Step by Step Solution

1. Step 1: Write the proportion equation
   215,170 : 472,804 = 472,804 : x
2. Step 2: Convert to fraction form
   215,170/472,804 = 472,804/x
3. Step 3: Cross multiply
   215,170x = 472,804 × 472,804
4. Step 4: Simplify right side
   215,170x = 223,543,622,416
5. Step 5: Solve for x
   x = 223,543,622,416/215,170
6. Step 6: Final answer
   x = 1,038,916.31