Finding the Third Proportional to 5,207,188 and 8,061,990

Step by Step Solution

1. Step 1: Write the proportion equation
   5,207,188 : 8,061,990 = 8,061,990 : x
2. Step 2: Convert to fraction form
   5,207,188/8,061,990 = 8,061,990/x
3. Step 3: Cross multiply
   5,207,188x = 8,061,990 × 8,061,990
4. Step 4: Simplify right side
   5,207,188x = 64,995,682,760,100
5. Step 5: Solve for x
   x = 64,995,682,760,100/5,207,188
6. Step 6: Final answer
   x = 12,481,915.91