Finding the Third Proportional to 900,486 and 1,921,476

Step by Step Solution

1. Step 1: Write the proportion equation
   900,486 : 1,921,476 = 1,921,476 : x
2. Step 2: Convert to fraction form
   900,486/1,921,476 = 1,921,476/x
3. Step 3: Cross multiply
   900,486x = 1,921,476 × 1,921,476
4. Step 4: Simplify right side
   900,486x = 3,692,070,018,576
5. Step 5: Solve for x
   x = 3,692,070,018,576/900,486
6. Step 6: Final answer
   x = 4,100,085.97