Finding the Third Proportional to 913,878 and 1,980,288

Step by Step Solution

1. Step 1: Write the proportion equation
   913,878 : 1,980,288 = 1,980,288 : x
2. Step 2: Convert to fraction form
   913,878/1,980,288 = 1,980,288/x
3. Step 3: Cross multiply
   913,878x = 1,980,288 × 1,980,288
4. Step 4: Simplify right side
   913,878x = 3,921,540,562,944
5. Step 5: Solve for x
   x = 3,921,540,562,944/913,878
6. Step 6: Final answer
   x = 4,291,098.55