Finding the Third Proportional to 5,298,990 and 8,404,476

Step by Step Solution

1. Step 1: Write the proportion equation
   5,298,990 : 8,404,476 = 8,404,476 : x
2. Step 2: Convert to fraction form
   5,298,990/8,404,476 = 8,404,476/x
3. Step 3: Cross multiply
   5,298,990x = 8,404,476 × 8,404,476
4. Step 4: Simplify right side
   5,298,990x = 70,635,216,834,576
5. Step 5: Solve for x
   x = 70,635,216,834,576/5,298,990
6. Step 6: Final answer
   x = 13,329,939.64