Finding the Third Proportional to 3,123,724 and 4,718,868

Step by Step Solution

1. Step 1: Write the proportion equation
   3,123,724 : 4,718,868 = 4,718,868 : x
2. Step 2: Convert to fraction form
   3,123,724/4,718,868 = 4,718,868/x
3. Step 3: Cross multiply
   3,123,724x = 4,718,868 × 4,718,868
4. Step 4: Simplify right side
   3,123,724x = 22,267,715,201,424
5. Step 5: Solve for x
   x = 22,267,715,201,424/3,123,724
6. Step 6: Final answer
   x = 7,128,579.61