Finding the Third Proportional to 8,739,499 and 13,230,686

Step by Step Solution

1. Step 1: Write the proportion equation
   8,739,499 : 13,230,686 = 13,230,686 : x
2. Step 2: Convert to fraction form
   8,739,499/13,230,686 = 13,230,686/x
3. Step 3: Cross multiply
   8,739,499x = 13,230,686 × 13,230,686
4. Step 4: Simplify right side
   8,739,499x = 175,051,052,030,596
5. Step 5: Solve for x
   x = 175,051,052,030,596/8,739,499
6. Step 6: Final answer
   x = 20,029,872.65