Finding the Third Proportional to 2,515,397 and 5,429,142

Step by Step Solution

1. Step 1: Write the proportion equation
   2,515,397 : 5,429,142 = 5,429,142 : x
2. Step 2: Convert to fraction form
   2,515,397/5,429,142 = 5,429,142/x
3. Step 3: Cross multiply
   2,515,397x = 5,429,142 × 5,429,142
4. Step 4: Simplify right side
   2,515,397x = 29,475,582,856,164
5. Step 5: Solve for x
   x = 29,475,582,856,164/2,515,397
6. Step 6: Final answer
   x = 11,718,063.93