Finding the Third Proportional to 903,138 and 1,990,578

Step by Step Solution

1. Step 1: Write the proportion equation
   903,138 : 1,990,578 = 1,990,578 : x
2. Step 2: Convert to fraction form
   903,138/1,990,578 = 1,990,578/x
3. Step 3: Cross multiply
   903,138x = 1,990,578 × 1,990,578
4. Step 4: Simplify right side
   903,138x = 3,962,400,774,084
5. Step 5: Solve for x
   x = 3,962,400,774,084/903,138
6. Step 6: Final answer
   x = 4,387,370.23