Finding the Third Proportional to 5,681,306 and 7,678,311

Step by Step Solution

1. Step 1: Write the proportion equation
   5,681,306 : 7,678,311 = 7,678,311 : x
2. Step 2: Convert to fraction form
   5,681,306/7,678,311 = 7,678,311/x
3. Step 3: Cross multiply
   5,681,306x = 7,678,311 × 7,678,311
4. Step 4: Simplify right side
   5,681,306x = 58,956,459,812,721
5. Step 5: Solve for x
   x = 58,956,459,812,721/5,681,306
6. Step 6: Final answer
   x = 10,377,272.38