Finding the Third Proportional to 20,861,892 and 42,313,350

Step by Step Solution

1. Step 1: Write the proportion equation
   20,861,892 : 42,313,350 = 42,313,350 : x
2. Step 2: Convert to fraction form
   20,861,892/42,313,350 = 42,313,350/x
3. Step 3: Cross multiply
   20,861,892x = 42,313,350 × 42,313,350
4. Step 4: Simplify right side
   20,861,892x = 1,790,419,588,222,500
5. Step 5: Solve for x
   x = 1,790,419,588,222,500/20,861,892
6. Step 6: Final answer
   x = 85,822,493.39