Finding the Third Proportional to 309,666 and 452,550

Step by Step Solution

1. Step 1: Write the proportion equation
   309,666 : 452,550 = 452,550 : x
2. Step 2: Convert to fraction form
   309,666/452,550 = 452,550/x
3. Step 3: Cross multiply
   309,666x = 452,550 × 452,550
4. Step 4: Simplify right side
   309,666x = 204,801,502,500
5. Step 5: Solve for x
   x = 204,801,502,500/309,666
6. Step 6: Final answer
   x = 661,362.57