Finding the Third Proportional to 6,404,064 and 9,905,355

Step by Step Solution

1. Step 1: Write the proportion equation
   6,404,064 : 9,905,355 = 9,905,355 : x
2. Step 2: Convert to fraction form
   6,404,064/9,905,355 = 9,905,355/x
3. Step 3: Cross multiply
   6,404,064x = 9,905,355 × 9,905,355
4. Step 4: Simplify right side
   6,404,064x = 98,116,057,676,025
5. Step 5: Solve for x
   x = 98,116,057,676,025/6,404,064
6. Step 6: Final answer
   x = 15,320,905.24