Finding the Third Proportional to 1,298,214 and 2,815,398

Step by Step Solution

1. Step 1: Write the proportion equation
   1,298,214 : 2,815,398 = 2,815,398 : x
2. Step 2: Convert to fraction form
   1,298,214/2,815,398 = 2,815,398/x
3. Step 3: Cross multiply
   1,298,214x = 2,815,398 × 2,815,398
4. Step 4: Simplify right side
   1,298,214x = 7,926,465,898,404
5. Step 5: Solve for x
   x = 7,926,465,898,404/1,298,214
6. Step 6: Final answer
   x = 6,105,669.71