Finding the Third Proportional to 8,158,432 and 12,734,178

Step by Step Solution

1. Step 1: Write the proportion equation
   8,158,432 : 12,734,178 = 12,734,178 : x
2. Step 2: Convert to fraction form
   8,158,432/12,734,178 = 12,734,178/x
3. Step 3: Cross multiply
   8,158,432x = 12,734,178 × 12,734,178
4. Step 4: Simplify right side
   8,158,432x = 162,159,289,335,684
5. Step 5: Solve for x
   x = 162,159,289,335,684/8,158,432
6. Step 6: Final answer
   x = 19,876,281.29