Finding the Third Proportional to 395,288 and 869,300

Step by Step Solution

1. Step 1: Write the proportion equation
   395,288 : 869,300 = 869,300 : x
2. Step 2: Convert to fraction form
   395,288/869,300 = 869,300/x
3. Step 3: Cross multiply
   395,288x = 869,300 × 869,300
4. Step 4: Simplify right side
   395,288x = 755,682,490,000
5. Step 5: Solve for x
   x = 755,682,490,000/395,288
6. Step 6: Final answer
   x = 1,911,726.36