Finding the Third Proportional to 2,578,208 and 5,529,472

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578,208 : 5,529,472 = 5,529,472 : x
2. Step 2: Convert to fraction form
   2,578,208/5,529,472 = 5,529,472/x
3. Step 3: Cross multiply
   2,578,208x = 5,529,472 × 5,529,472
4. Step 4: Simplify right side
   2,578,208x = 30,575,060,598,784
5. Step 5: Solve for x
   x = 30,575,060,598,784/2,578,208
6. Step 6: Final answer
   x = 11,859,035.66