Finding the Third Proportional to 8,864,064 and 13,885,128

Step by Step Solution

1. Step 1: Write the proportion equation
   8,864,064 : 13,885,128 = 13,885,128 : x
2. Step 2: Convert to fraction form
   8,864,064/13,885,128 = 13,885,128/x
3. Step 3: Cross multiply
   8,864,064x = 13,885,128 × 13,885,128
4. Step 4: Simplify right side
   8,864,064x = 192,796,779,576,384
5. Step 5: Solve for x
   x = 192,796,779,576,384/8,864,064
6. Step 6: Final answer
   x = 21,750,382.17