Finding the Third Proportional to 1,866,780 and 4,071,438

Step by Step Solution

1. Step 1: Write the proportion equation
   1,866,780 : 4,071,438 = 4,071,438 : x
2. Step 2: Convert to fraction form
   1,866,780/4,071,438 = 4,071,438/x
3. Step 3: Cross multiply
   1,866,780x = 4,071,438 × 4,071,438
4. Step 4: Simplify right side
   1,866,780x = 16,576,607,387,844
5. Step 5: Solve for x
   x = 16,576,607,387,844/1,866,780
6. Step 6: Final answer
   x = 8,879,786.26