Finding the Third Proportional to 8,527,413 and 13,120,479

Step by Step Solution

1. Step 1: Write the proportion equation
   8,527,413 : 13,120,479 = 13,120,479 : x
2. Step 2: Convert to fraction form
   8,527,413/13,120,479 = 13,120,479/x
3. Step 3: Cross multiply
   8,527,413x = 13,120,479 × 13,120,479
4. Step 4: Simplify right side
   8,527,413x = 172,146,969,189,441
5. Step 5: Solve for x
   x = 172,146,969,189,441/8,527,413
6. Step 6: Final answer
   x = 20,187,478.80