Finding the Third Proportional to 191,621 and 447,570

Step by Step Solution

1. Step 1: Write the proportion equation
   191,621 : 447,570 = 447,570 : x
2. Step 2: Convert to fraction form
   191,621/447,570 = 447,570/x
3. Step 3: Cross multiply
   191,621x = 447,570 × 447,570
4. Step 4: Simplify right side
   191,621x = 200,318,904,900
5. Step 5: Solve for x
   x = 200,318,904,900/191,621
6. Step 6: Final answer
   x = 1,045,391.19