Finding the Third Proportional to 1,584,411 and 3,421,386

Step by Step Solution

1. Step 1: Write the proportion equation
   1,584,411 : 3,421,386 = 3,421,386 : x
2. Step 2: Convert to fraction form
   1,584,411/3,421,386 = 3,421,386/x
3. Step 3: Cross multiply
   1,584,411x = 3,421,386 × 3,421,386
4. Step 4: Simplify right side
   1,584,411x = 11,705,882,160,996
5. Step 5: Solve for x
   x = 11,705,882,160,996/1,584,411
6. Step 6: Final answer
   x = 7,388,160.12