Finding the Third Proportional to 5,728,644 and 12,479,832

Step by Step Solution

1. Step 1: Write the proportion equation
   5,728,644 : 12,479,832 = 12,479,832 : x
2. Step 2: Convert to fraction form
   5,728,644/12,479,832 = 12,479,832/x
3. Step 3: Cross multiply
   5,728,644x = 12,479,832 × 12,479,832
4. Step 4: Simplify right side
   5,728,644x = 155,746,206,748,224
5. Step 5: Solve for x
   x = 155,746,206,748,224/5,728,644
6. Step 6: Final answer
   x = 27,187,272.72