Finding the Third Proportional to 5,049,721 and 7,102,789

Step by Step Solution

1. Step 1: Write the proportion equation
   5,049,721 : 7,102,789 = 7,102,789 : x
2. Step 2: Convert to fraction form
   5,049,721/7,102,789 = 7,102,789/x
3. Step 3: Cross multiply
   5,049,721x = 7,102,789 × 7,102,789
4. Step 4: Simplify right side
   5,049,721x = 50,449,611,578,521
5. Step 5: Solve for x
   x = 50,449,611,578,521/5,049,721
6. Step 6: Final answer
   x = 9,990,574.05