Finding the Third Proportional to 2,191,866 and 3,439,257

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191,866 : 3,439,257 = 3,439,257 : x
2. Step 2: Convert to fraction form
   2,191,866/3,439,257 = 3,439,257/x
3. Step 3: Cross multiply
   2,191,866x = 3,439,257 × 3,439,257
4. Step 4: Simplify right side
   2,191,866x = 11,828,488,712,049
5. Step 5: Solve for x
   x = 11,828,488,712,049/2,191,866
6. Step 6: Final answer
   x = 5,396,538.25