Finding the Third Proportional to 1,215,464 and 1,886,912

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215,464 : 1,886,912 = 1,886,912 : x
2. Step 2: Convert to fraction form
   1,215,464/1,886,912 = 1,886,912/x
3. Step 3: Cross multiply
   1,215,464x = 1,886,912 × 1,886,912
4. Step 4: Simplify right side
   1,215,464x = 3,560,436,895,744
5. Step 5: Solve for x
   x = 3,560,436,895,744/1,215,464
6. Step 6: Final answer
   x = 2,929,282.06