Finding the Third Proportional to 668,381 and 1,443,298

Step by Step Solution

1. Step 1: Write the proportion equation
   668,381 : 1,443,298 = 1,443,298 : x
2. Step 2: Convert to fraction form
   668,381/1,443,298 = 1,443,298/x
3. Step 3: Cross multiply
   668,381x = 1,443,298 × 1,443,298
4. Step 4: Simplify right side
   668,381x = 2,083,109,116,804
5. Step 5: Solve for x
   x = 2,083,109,116,804/668,381
6. Step 6: Final answer
   x = 3,116,649.21