Finding the Third Proportional to 1,225,854 and 2,599,146

Step by Step Solution

1. Step 1: Write the proportion equation
   1,225,854 : 2,599,146 = 2,599,146 : x
2. Step 2: Convert to fraction form
   1,225,854/2,599,146 = 2,599,146/x
3. Step 3: Cross multiply
   1,225,854x = 2,599,146 × 2,599,146
4. Step 4: Simplify right side
   1,225,854x = 6,755,559,929,316
5. Step 5: Solve for x
   x = 6,755,559,929,316/1,225,854
6. Step 6: Final answer
   x = 5,510,900.91