Finding the Third Proportional to 1,939,833 and 4,215,390

Step by Step Solution

1. Step 1: Write the proportion equation
   1,939,833 : 4,215,390 = 4,215,390 : x
2. Step 2: Convert to fraction form
   1,939,833/4,215,390 = 4,215,390/x
3. Step 3: Cross multiply
   1,939,833x = 4,215,390 × 4,215,390
4. Step 4: Simplify right side
   1,939,833x = 17,769,512,852,100
5. Step 5: Solve for x
   x = 17,769,512,852,100/1,939,833
6. Step 6: Final answer
   x = 9,160,331.25