Finding the Third Proportional to 2,722,210 and 4,178,487

Step by Step Solution

1. Step 1: Write the proportion equation
   2,722,210 : 4,178,487 = 4,178,487 : x
2. Step 2: Convert to fraction form
   2,722,210/4,178,487 = 4,178,487/x
3. Step 3: Cross multiply
   2,722,210x = 4,178,487 × 4,178,487
4. Step 4: Simplify right side
   2,722,210x = 17,459,753,609,169
5. Step 5: Solve for x
   x = 17,459,753,609,169/2,722,210
6. Step 6: Final answer
   x = 6,413,815.84