Finding the Third Proportional to 1,584,306 and 3,421,140

Step by Step Solution

1. Step 1: Write the proportion equation
   1,584,306 : 3,421,140 = 3,421,140 : x
2. Step 2: Convert to fraction form
   1,584,306/3,421,140 = 3,421,140/x
3. Step 3: Cross multiply
   1,584,306x = 3,421,140 × 3,421,140
4. Step 4: Simplify right side
   1,584,306x = 11,704,198,899,600
5. Step 5: Solve for x
   x = 11,704,198,899,600/1,584,306
6. Step 6: Final answer
   x = 7,387,587.31