Finding the Third Proportional to 2,131,866 and 3,280,139

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131,866 : 3,280,139 = 3,280,139 : x
2. Step 2: Convert to fraction form
   2,131,866/3,280,139 = 3,280,139/x
3. Step 3: Cross multiply
   2,131,866x = 3,280,139 × 3,280,139
4. Step 4: Simplify right side
   2,131,866x = 10,759,311,859,321
5. Step 5: Solve for x
   x = 10,759,311,859,321/2,131,866
6. Step 6: Final answer
   x = 5,046,898.75