Finding the Third Proportional to 1,615,139 and 3,548,686

Step by Step Solution

1. Step 1: Write the proportion equation
   1,615,139 : 3,548,686 = 3,548,686 : x
2. Step 2: Convert to fraction form
   1,615,139/3,548,686 = 3,548,686/x
3. Step 3: Cross multiply
   1,615,139x = 3,548,686 × 3,548,686
4. Step 4: Simplify right side
   1,615,139x = 12,593,172,326,596
5. Step 5: Solve for x
   x = 12,593,172,326,596/1,615,139
6. Step 6: Final answer
   x = 7,796,958.85