Finding the Third Proportional to 1,186,391 and 2,559,406

Step by Step Solution

1. Step 1: Write the proportion equation
   1,186,391 : 2,559,406 = 2,559,406 : x
2. Step 2: Convert to fraction form
   1,186,391/2,559,406 = 2,559,406/x
3. Step 3: Cross multiply
   1,186,391x = 2,559,406 × 2,559,406
4. Step 4: Simplify right side
   1,186,391x = 6,550,559,072,836
5. Step 5: Solve for x
   x = 6,550,559,072,836/1,186,391
6. Step 6: Final answer
   x = 5,521,416.69