Finding the Third Proportional to 491,469 and 660,429

Step by Step Solution

1. Step 1: Write the proportion equation
   491,469 : 660,429 = 660,429 : x
2. Step 2: Convert to fraction form
   491,469/660,429 = 660,429/x
3. Step 3: Cross multiply
   491,469x = 660,429 × 660,429
4. Step 4: Simplify right side
   491,469x = 436,166,464,041
5. Step 5: Solve for x
   x = 436,166,464,041/491,469
6. Step 6: Final answer
   x = 887,475.03