Finding the Third Proportional to 1,584,339 and 3,421,197

Step by Step Solution

1. Step 1: Write the proportion equation
   1,584,339 : 3,421,197 = 3,421,197 : x
2. Step 2: Convert to fraction form
   1,584,339/3,421,197 = 3,421,197/x
3. Step 3: Cross multiply
   1,584,339x = 3,421,197 × 3,421,197
4. Step 4: Simplify right side
   1,584,339x = 11,704,588,912,809
5. Step 5: Solve for x
   x = 11,704,588,912,809/1,584,339
6. Step 6: Final answer
   x = 7,387,679.60