Finding the Third Proportional to 1,207,264 and 2,558,442

Step by Step Solution

1. Step 1: Write the proportion equation
   1,207,264 : 2,558,442 = 2,558,442 : x
2. Step 2: Convert to fraction form
   1,207,264/2,558,442 = 2,558,442/x
3. Step 3: Cross multiply
   1,207,264x = 2,558,442 × 2,558,442
4. Step 4: Simplify right side
   1,207,264x = 6,545,625,467,364
5. Step 5: Solve for x
   x = 6,545,625,467,364/1,207,264
6. Step 6: Final answer
   x = 5,421,867.52