Finding the Third Proportional to 216,620 and 475,086

Step by Step Solution

1. Step 1: Write the proportion equation
   216,620 : 475,086 = 475,086 : x
2. Step 2: Convert to fraction form
   216,620/475,086 = 475,086/x
3. Step 3: Cross multiply
   216,620x = 475,086 × 475,086
4. Step 4: Simplify right side
   216,620x = 225,706,707,396
5. Step 5: Solve for x
   x = 225,706,707,396/216,620
6. Step 6: Final answer
   x = 1,041,947.68