Finding the Third Proportional to 642,322 and 1,399,036

Step by Step Solution

1. Step 1: Write the proportion equation
   642,322 : 1,399,036 = 1,399,036 : x
2. Step 2: Convert to fraction form
   642,322/1,399,036 = 1,399,036/x
3. Step 3: Cross multiply
   642,322x = 1,399,036 × 1,399,036
4. Step 4: Simplify right side
   642,322x = 1,957,301,729,296
5. Step 5: Solve for x
   x = 1,957,301,729,296/642,322
6. Step 6: Final answer
   x = 3,047,228.23