Finding the Third Proportional to 661,638 and 1,435,298

Step by Step Solution

1. Step 1: Write the proportion equation
   661,638 : 1,435,298 = 1,435,298 : x
2. Step 2: Convert to fraction form
   661,638/1,435,298 = 1,435,298/x
3. Step 3: Cross multiply
   661,638x = 1,435,298 × 1,435,298
4. Step 4: Simplify right side
   661,638x = 2,060,080,348,804
5. Step 5: Solve for x
   x = 2,060,080,348,804/661,638
6. Step 6: Final answer
   x = 3,113,606.46