Finding the Third Proportional to 5,705,172 and 7,770,438

Step by Step Solution

1. Step 1: Write the proportion equation
   5,705,172 : 7,770,438 = 7,770,438 : x
2. Step 2: Convert to fraction form
   5,705,172/7,770,438 = 7,770,438/x
3. Step 3: Cross multiply
   5,705,172x = 7,770,438 × 7,770,438
4. Step 4: Simplify right side
   5,705,172x = 60,379,706,711,844
5. Step 5: Solve for x
   x = 60,379,706,711,844/5,705,172
6. Step 6: Final answer
   x = 10,583,328.02