Finding the Third Proportional to 8,503,168 and 12,912,216

Step by Step Solution

1. Step 1: Write the proportion equation
   8,503,168 : 12,912,216 = 12,912,216 : x
2. Step 2: Convert to fraction form
   8,503,168/12,912,216 = 12,912,216/x
3. Step 3: Cross multiply
   8,503,168x = 12,912,216 × 12,912,216
4. Step 4: Simplify right side
   8,503,168x = 166,725,322,030,656
5. Step 5: Solve for x
   x = 166,725,322,030,656/8,503,168
6. Step 6: Final answer
   x = 19,607,435.96