Finding the Third Proportional to 8,619,363 and 12,854,298

Step by Step Solution

1. Step 1: Write the proportion equation
   8,619,363 : 12,854,298 = 12,854,298 : x
2. Step 2: Convert to fraction form
   8,619,363/12,854,298 = 12,854,298/x
3. Step 3: Cross multiply
   8,619,363x = 12,854,298 × 12,854,298
4. Step 4: Simplify right side
   8,619,363x = 165,232,977,072,804
5. Step 5: Solve for x
   x = 165,232,977,072,804/8,619,363
6. Step 6: Final answer
   x = 19,169,975.45