Finding the Third Proportional to 5,680,898 and 7,990,561

Step by Step Solution

1. Step 1: Write the proportion equation
   5,680,898 : 7,990,561 = 7,990,561 : x
2. Step 2: Convert to fraction form
   5,680,898/7,990,561 = 7,990,561/x
3. Step 3: Cross multiply
   5,680,898x = 7,990,561 × 7,990,561
4. Step 4: Simplify right side
   5,680,898x = 63,849,065,094,721
5. Step 5: Solve for x
   x = 63,849,065,094,721/5,680,898
6. Step 6: Final answer
   x = 11,239,255.68