Finding the Third Proportional to 862,644 and 1,876,440

Step by Step Solution

1. Step 1: Write the proportion equation
   862,644 : 1,876,440 = 1,876,440 : x
2. Step 2: Convert to fraction form
   862,644/1,876,440 = 1,876,440/x
3. Step 3: Cross multiply
   862,644x = 1,876,440 × 1,876,440
4. Step 4: Simplify right side
   862,644x = 3,521,027,073,600
5. Step 5: Solve for x
   x = 3,521,027,073,600/862,644
6. Step 6: Final answer
   x = 4,081,668.77