Finding the Third Proportional to 900,078 and 1,920,684

Step by Step Solution

1. Step 1: Write the proportion equation
   900,078 : 1,920,684 = 1,920,684 : x
2. Step 2: Convert to fraction form
   900,078/1,920,684 = 1,920,684/x
3. Step 3: Cross multiply
   900,078x = 1,920,684 × 1,920,684
4. Step 4: Simplify right side
   900,078x = 3,689,027,027,856
5. Step 5: Solve for x
   x = 3,689,027,027,856/900,078
6. Step 6: Final answer
   x = 4,098,563.71