Finding the Third Proportional to 6,404,047 and 9,905,329

Step by Step Solution

1. Step 1: Write the proportion equation
   6,404,047 : 9,905,329 = 9,905,329 : x
2. Step 2: Convert to fraction form
   6,404,047/9,905,329 = 9,905,329/x
3. Step 3: Cross multiply
   6,404,047x = 9,905,329 × 9,905,329
4. Step 4: Simplify right side
   6,404,047x = 98,115,542,598,241
5. Step 5: Solve for x
   x = 98,115,542,598,241/6,404,047
6. Step 6: Final answer
   x = 15,320,865.48