Finding the Third Proportional to 220,930 and 472,820

Step by Step Solution

1. Step 1: Write the proportion equation
   220,930 : 472,820 = 472,820 : x
2. Step 2: Convert to fraction form
   220,930/472,820 = 472,820/x
3. Step 3: Cross multiply
   220,930x = 472,820 × 472,820
4. Step 4: Simplify right side
   220,930x = 223,558,752,400
5. Step 5: Solve for x
   x = 223,558,752,400/220,930
6. Step 6: Final answer
   x = 1,011,898.58