Finding the Third Proportional to 2,688,566 and 5,691,988

Step by Step Solution

1. Step 1: Write the proportion equation
   2,688,566 : 5,691,988 = 5,691,988 : x
2. Step 2: Convert to fraction form
   2,688,566/5,691,988 = 5,691,988/x
3. Step 3: Cross multiply
   2,688,566x = 5,691,988 × 5,691,988
4. Step 4: Simplify right side
   2,688,566x = 32,398,727,392,144
5. Step 5: Solve for x
   x = 32,398,727,392,144/2,688,566
6. Step 6: Final answer
   x = 12,050,560.56