Finding the Third Proportional to 8,309,577 and 12,431,164.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,309,577 : 12,431,164.50 = 12,431,164.50 : x
2. Step 2: Convert to fraction form
   8,309,577/12,431,164.50 = 12,431,164.50/x
3. Step 3: Cross multiply
   8,309,577x = 12,431,164.50 × 12,431,164.50
4. Step 4: Simplify right side
   8,309,577x = 154,533,850,826,060.25
5. Step 5: Solve for x
   x = 154,533,850,826,060.25/8,309,577
6. Step 6: Final answer
   x = 18,597,077.90