Finding the Third Proportional to 3,980,824 and 8,529,576

Step by Step Solution

1. Step 1: Write the proportion equation
   3,980,824 : 8,529,576 = 8,529,576 : x
2. Step 2: Convert to fraction form
   3,980,824/8,529,576 = 8,529,576/x
3. Step 3: Cross multiply
   3,980,824x = 8,529,576 × 8,529,576
4. Step 4: Simplify right side
   3,980,824x = 72,753,666,739,776
5. Step 5: Solve for x
   x = 72,753,666,739,776/3,980,824
6. Step 6: Final answer
   x = 18,276,031.98