Finding the Third Proportional to 1,866,486 and 3,997,340

Step by Step Solution

1. Step 1: Write the proportion equation
   1,866,486 : 3,997,340 = 3,997,340 : x
2. Step 2: Convert to fraction form
   1,866,486/3,997,340 = 3,997,340/x
3. Step 3: Cross multiply
   1,866,486x = 3,997,340 × 3,997,340
4. Step 4: Simplify right side
   1,866,486x = 15,978,727,075,600
5. Step 5: Solve for x
   x = 15,978,727,075,600/1,866,486
6. Step 6: Final answer
   x = 8,560,860.93