Finding the Third Proportional to 2,515,419 and 5,429,190

Step by Step Solution

1. Step 1: Write the proportion equation
   2,515,419 : 5,429,190 = 5,429,190 : x
2. Step 2: Convert to fraction form
   2,515,419/5,429,190 = 5,429,190/x
3. Step 3: Cross multiply
   2,515,419x = 5,429,190 × 5,429,190
4. Step 4: Simplify right side
   2,515,419x = 29,476,104,056,100
5. Step 5: Solve for x
   x = 29,476,104,056,100/2,515,419
6. Step 6: Final answer
   x = 11,718,168.65