Finding the Third Proportional to 2,185,312 and 3,428,120

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185,312 : 3,428,120 = 3,428,120 : x
2. Step 2: Convert to fraction form
   2,185,312/3,428,120 = 3,428,120/x
3. Step 3: Cross multiply
   2,185,312x = 3,428,120 × 3,428,120
4. Step 4: Simplify right side
   2,185,312x = 11,752,006,734,400
5. Step 5: Solve for x
   x = 11,752,006,734,400/2,185,312
6. Step 6: Final answer
   x = 5,377,724.89