Finding the Third Proportional to 1,286,860 and 2,827,520

Step by Step Solution

1. Step 1: Write the proportion equation
   1,286,860 : 2,827,520 = 2,827,520 : x
2. Step 2: Convert to fraction form
   1,286,860/2,827,520 = 2,827,520/x
3. Step 3: Cross multiply
   1,286,860x = 2,827,520 × 2,827,520
4. Step 4: Simplify right side
   1,286,860x = 7,994,869,350,400
5. Step 5: Solve for x
   x = 7,994,869,350,400/1,286,860
6. Step 6: Final answer
   x = 6,212,695.51