Finding the Third Proportional to 1,388,207 and 2,815,051

Step by Step Solution

1. Step 1: Write the proportion equation
   1,388,207 : 2,815,051 = 2,815,051 : x
2. Step 2: Convert to fraction form
   1,388,207/2,815,051 = 2,815,051/x
3. Step 3: Cross multiply
   1,388,207x = 2,815,051 × 2,815,051
4. Step 4: Simplify right side
   1,388,207x = 7,924,512,132,601
5. Step 5: Solve for x
   x = 7,924,512,132,601/1,388,207
6. Step 6: Final answer
   x = 5,708,451.36