Finding the Third Proportional to 2,129,560 and 3,216,520

Step by Step Solution

1. Step 1: Write the proportion equation
   2,129,560 : 3,216,520 = 3,216,520 : x
2. Step 2: Convert to fraction form
   2,129,560/3,216,520 = 3,216,520/x
3. Step 3: Cross multiply
   2,129,560x = 3,216,520 × 3,216,520
4. Step 4: Simplify right side
   2,129,560x = 10,346,000,910,400
5. Step 5: Solve for x
   x = 10,346,000,910,400/2,129,560
6. Step 6: Final answer
   x = 4,858,281.01