Finding the Third Proportional to 309,674 and 452,560

Step by Step Solution

1. Step 1: Write the proportion equation
   309,674 : 452,560 = 452,560 : x
2. Step 2: Convert to fraction form
   309,674/452,560 = 452,560/x
3. Step 3: Cross multiply
   309,674x = 452,560 × 452,560
4. Step 4: Simplify right side
   309,674x = 204,810,553,600
5. Step 5: Solve for x
   x = 204,810,553,600/309,674
6. Step 6: Final answer
   x = 661,374.72