Finding the Third Proportional to 1,286,899 and 2,773,260

Step by Step Solution

1. Step 1: Write the proportion equation
   1,286,899 : 2,773,260 = 2,773,260 : x
2. Step 2: Convert to fraction form
   1,286,899/2,773,260 = 2,773,260/x
3. Step 3: Cross multiply
   1,286,899x = 2,773,260 × 2,773,260
4. Step 4: Simplify right side
   1,286,899x = 7,690,971,027,600
5. Step 5: Solve for x
   x = 7,690,971,027,600/1,286,899
6. Step 6: Final answer
   x = 5,976,359.47