Finding the Third Proportional to 455,300 and 668,184

Step by Step Solution

1. Step 1: Write the proportion equation
   455,300 : 668,184 = 668,184 : x
2. Step 2: Convert to fraction form
   455,300/668,184 = 668,184/x
3. Step 3: Cross multiply
   455,300x = 668,184 × 668,184
4. Step 4: Simplify right side
   455,300x = 446,469,857,856
5. Step 5: Solve for x
   x = 446,469,857,856/455,300
6. Step 6: Final answer
   x = 980,605.88