Finding the Third Proportional to 5,121,188 and 7,929,111

Step by Step Solution

1. Step 1: Write the proportion equation
   5,121,188 : 7,929,111 = 7,929,111 : x
2. Step 2: Convert to fraction form
   5,121,188/7,929,111 = 7,929,111/x
3. Step 3: Cross multiply
   5,121,188x = 7,929,111 × 7,929,111
4. Step 4: Simplify right side
   5,121,188x = 62,870,801,250,321
5. Step 5: Solve for x
   x = 62,870,801,250,321/5,121,188
6. Step 6: Final answer
   x = 12,276,604.81