Finding the Third Proportional to 5,475,872 and 8,512,486

Step by Step Solution

1. Step 1: Write the proportion equation
   5,475,872 : 8,512,486 = 8,512,486 : x
2. Step 2: Convert to fraction form
   5,475,872/8,512,486 = 8,512,486/x
3. Step 3: Cross multiply
   5,475,872x = 8,512,486 × 8,512,486
4. Step 4: Simplify right side
   5,475,872x = 72,462,417,900,196
5. Step 5: Solve for x
   x = 72,462,417,900,196/5,475,872
6. Step 6: Final answer
   x = 13,233,037.20