Finding the Third Proportional to 1,866,490 and 3,997,348

Step by Step Solution

1. Step 1: Write the proportion equation
   1,866,490 : 3,997,348 = 3,997,348 : x
2. Step 2: Convert to fraction form
   1,866,490/3,997,348 = 3,997,348/x
3. Step 3: Cross multiply
   1,866,490x = 3,997,348 × 3,997,348
4. Step 4: Simplify right side
   1,866,490x = 15,978,791,033,104
5. Step 5: Solve for x
   x = 15,978,791,033,104/1,866,490
6. Step 6: Final answer
   x = 8,560,876.85