Finding the Third Proportional to 1,225,868 and 2,599,172

Step by Step Solution

1. Step 1: Write the proportion equation
   1,225,868 : 2,599,172 = 2,599,172 : x
2. Step 2: Convert to fraction form
   1,225,868/2,599,172 = 2,599,172/x
3. Step 3: Cross multiply
   1,225,868x = 2,599,172 × 2,599,172
4. Step 4: Simplify right side
   1,225,868x = 6,755,695,085,584
5. Step 5: Solve for x
   x = 6,755,695,085,584/1,225,868
6. Step 6: Final answer
   x = 5,510,948.23