Finding the Third Proportional to 1,584,381 and 3,421,326

Step by Step Solution

1. Step 1: Write the proportion equation
   1,584,381 : 3,421,326 = 3,421,326 : x
2. Step 2: Convert to fraction form
   1,584,381/3,421,326 = 3,421,326/x
3. Step 3: Cross multiply
   1,584,381x = 3,421,326 × 3,421,326
4. Step 4: Simplify right side
   1,584,381x = 11,705,471,598,276
5. Step 5: Solve for x
   x = 11,705,471,598,276/1,584,381
6. Step 6: Final answer
   x = 7,388,040.88