Finding the Third Proportional to 2,142,780 and 2,910,149

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142,780 : 2,910,149 = 2,910,149 : x
2. Step 2: Convert to fraction form
   2,142,780/2,910,149 = 2,910,149/x
3. Step 3: Cross multiply
   2,142,780x = 2,910,149 × 2,910,149
4. Step 4: Simplify right side
   2,142,780x = 8,468,967,202,201
5. Step 5: Solve for x
   x = 8,468,967,202,201/2,142,780
6. Step 6: Final answer
   x = 3,952,326.98