Finding the Third Proportional to 2,660,386 and 4,127,216

Step by Step Solution

1. Step 1: Write the proportion equation
   2,660,386 : 4,127,216 = 4,127,216 : x
2. Step 2: Convert to fraction form
   2,660,386/4,127,216 = 4,127,216/x
3. Step 3: Cross multiply
   2,660,386x = 4,127,216 × 4,127,216
4. Step 4: Simplify right side
   2,660,386x = 17,033,911,910,656
5. Step 5: Solve for x
   x = 17,033,911,910,656/2,660,386
6. Step 6: Final answer
   x = 6,402,797.15