Finding the Third Proportional to 2,578,210 and 5,671,940

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578,210 : 5,671,940 = 5,671,940 : x
2. Step 2: Convert to fraction form
   2,578,210/5,671,940 = 5,671,940/x
3. Step 3: Cross multiply
   2,578,210x = 5,671,940 × 5,671,940
4. Step 4: Simplify right side
   2,578,210x = 32,170,903,363,600
5. Step 5: Solve for x
   x = 32,170,903,363,600/2,578,210
6. Step 6: Final answer
   x = 12,477,999.61