Finding the Third Proportional to 2,151,549 and 4,681,638

Step by Step Solution

1. Step 1: Write the proportion equation
   2,151,549 : 4,681,638 = 4,681,638 : x
2. Step 2: Convert to fraction form
   2,151,549/4,681,638 = 4,681,638/x
3. Step 3: Cross multiply
   2,151,549x = 4,681,638 × 4,681,638
4. Step 4: Simplify right side
   2,151,549x = 21,917,734,363,044
5. Step 5: Solve for x
   x = 21,917,734,363,044/2,151,549
6. Step 6: Final answer
   x = 10,186,955.71