Finding the Third Proportional to 5,121,186 and 7,929,108

Step by Step Solution

1. Step 1: Write the proportion equation
   5,121,186 : 7,929,108 = 7,929,108 : x
2. Step 2: Convert to fraction form
   5,121,186/7,929,108 = 7,929,108/x
3. Step 3: Cross multiply
   5,121,186x = 7,929,108 × 7,929,108
4. Step 4: Simplify right side
   5,121,186x = 62,870,753,675,664
5. Step 5: Solve for x
   x = 62,870,753,675,664/5,121,186
6. Step 6: Final answer
   x = 12,276,600.32