Finding the Third Proportional to 1,289,156 and 2,684,172

Step by Step Solution

1. Step 1: Write the proportion equation
   1,289,156 : 2,684,172 = 2,684,172 : x
2. Step 2: Convert to fraction form
   1,289,156/2,684,172 = 2,684,172/x
3. Step 3: Cross multiply
   1,289,156x = 2,684,172 × 2,684,172
4. Step 4: Simplify right side
   1,289,156x = 7,204,779,325,584
5. Step 5: Solve for x
   x = 7,204,779,325,584/1,289,156
6. Step 6: Final answer
   x = 5,588,756.77