Finding the Third Proportional to 8,619,574 and 12,854,624

Step by Step Solution

1. Step 1: Write the proportion equation
   8,619,574 : 12,854,624 = 12,854,624 : x
2. Step 2: Convert to fraction form
   8,619,574/12,854,624 = 12,854,624/x
3. Step 3: Cross multiply
   8,619,574x = 12,854,624 × 12,854,624
4. Step 4: Simplify right side
   8,619,574x = 165,241,358,181,376
5. Step 5: Solve for x
   x = 165,241,358,181,376/8,619,574
6. Step 6: Final answer
   x = 19,170,478.52