Finding the Third Proportional to 1,865,432 and 3,986,824

Step by Step Solution

1. Step 1: Write the proportion equation
   1,865,432 : 3,986,824 = 3,986,824 : x
2. Step 2: Convert to fraction form
   1,865,432/3,986,824 = 3,986,824/x
3. Step 3: Cross multiply
   1,865,432x = 3,986,824 × 3,986,824
4. Step 4: Simplify right side
   1,865,432x = 15,894,765,606,976
5. Step 5: Solve for x
   x = 15,894,765,606,976/1,865,432
6. Step 6: Final answer
   x = 8,520,688.83