Finding the Third Proportional to 5,388,128 and 8,530,341

Step by Step Solution

1. Step 1: Write the proportion equation
   5,388,128 : 8,530,341 = 8,530,341 : x
2. Step 2: Convert to fraction form
   5,388,128/8,530,341 = 8,530,341/x
3. Step 3: Cross multiply
   5,388,128x = 8,530,341 × 8,530,341
4. Step 4: Simplify right side
   5,388,128x = 72,766,717,576,281
5. Step 5: Solve for x
   x = 72,766,717,576,281/5,388,128
6. Step 6: Final answer
   x = 13,505,009.08