Finding the Third Proportional to 5,124,870 and 7,720,830

Step by Step Solution

1. Step 1: Write the proportion equation
   5,124,870 : 7,720,830 = 7,720,830 : x
2. Step 2: Convert to fraction form
   5,124,870/7,720,830 = 7,720,830/x
3. Step 3: Cross multiply
   5,124,870x = 7,720,830 × 7,720,830
4. Step 4: Simplify right side
   5,124,870x = 59,611,215,888,900
5. Step 5: Solve for x
   x = 59,611,215,888,900/5,124,870
6. Step 6: Final answer
   x = 11,631,751.81