Finding the Third Proportional to 1,225,278 and 2,529,306

Step by Step Solution

1. Step 1: Write the proportion equation
   1,225,278 : 2,529,306 = 2,529,306 : x
2. Step 2: Convert to fraction form
   1,225,278/2,529,306 = 2,529,306/x
3. Step 3: Cross multiply
   1,225,278x = 2,529,306 × 2,529,306
4. Step 4: Simplify right side
   1,225,278x = 6,397,388,841,636
5. Step 5: Solve for x
   x = 6,397,388,841,636/1,225,278
6. Step 6: Final answer
   x = 5,221,173.35