Finding the Third Proportional to 657,663 and 1,434,345

Step by Step Solution

1. Step 1: Write the proportion equation
   657,663 : 1,434,345 = 1,434,345 : x
2. Step 2: Convert to fraction form
   657,663/1,434,345 = 1,434,345/x
3. Step 3: Cross multiply
   657,663x = 1,434,345 × 1,434,345
4. Step 4: Simplify right side
   657,663x = 2,057,345,579,025
5. Step 5: Solve for x
   x = 2,057,345,579,025/657,663
6. Step 6: Final answer
   x = 3,128,267.18