Finding the Third Proportional to 868,978 and 1,817,400

Step by Step Solution

1. Step 1: Write the proportion equation
   868,978 : 1,817,400 = 1,817,400 : x
2. Step 2: Convert to fraction form
   868,978/1,817,400 = 1,817,400/x
3. Step 3: Cross multiply
   868,978x = 1,817,400 × 1,817,400
4. Step 4: Simplify right side
   868,978x = 3,302,942,760,000
5. Step 5: Solve for x
   x = 3,302,942,760,000/868,978
6. Step 6: Final answer
   x = 3,800,950.96