Finding the Third Proportional to 1,015,991 and 1,393,201

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015,991 : 1,393,201 = 1,393,201 : x
2. Step 2: Convert to fraction form
   1,015,991/1,393,201 = 1,393,201/x
3. Step 3: Cross multiply
   1,015,991x = 1,393,201 × 1,393,201
4. Step 4: Simplify right side
   1,015,991x = 1,941,009,026,401
5. Step 5: Solve for x
   x = 1,941,009,026,401/1,015,991
6. Step 6: Final answer
   x = 1,910,458.88