Finding the Third Proportional to 2,178,624 and 4,707,072

Step by Step Solution

1. Step 1: Write the proportion equation
   2,178,624 : 4,707,072 = 4,707,072 : x
2. Step 2: Convert to fraction form
   2,178,624/4,707,072 = 4,707,072/x
3. Step 3: Cross multiply
   2,178,624x = 4,707,072 × 4,707,072
4. Step 4: Simplify right side
   2,178,624x = 22,156,526,813,184
5. Step 5: Solve for x
   x = 22,156,526,813,184/2,178,624
6. Step 6: Final answer
   x = 10,169,963.62