Finding the Third Proportional to 603,666 and 1,256,940

Step by Step Solution

1. Step 1: Write the proportion equation
   603,666 : 1,256,940 = 1,256,940 : x
2. Step 2: Convert to fraction form
   603,666/1,256,940 = 1,256,940/x
3. Step 3: Cross multiply
   603,666x = 1,256,940 × 1,256,940
4. Step 4: Simplify right side
   603,666x = 1,579,898,163,600
5. Step 5: Solve for x
   x = 1,579,898,163,600/603,666
6. Step 6: Final answer
   x = 2,617,172.68