Finding the Third Proportional to 28,197,709,892 and 42,659,819,523

Step by Step Solution

1. Step 1: Write the proportion equation
   28,197,709,892 : 42,659,819,523 = 42,659,819,523 : x
2. Step 2: Convert to fraction form
   28,197,709,892/42,659,819,523 = 42,659,819,523/x
3. Step 3: Cross multiply
   28,197,709,892x = 42,659,819,523 × 42,659,819,523
4. Step 4: Simplify right side
   28,197,709,892x = 1,819,860,201,734,932,004,864
5. Step 5: Solve for x
   x = 1,819,860,201,734,932,004,864/28,197,709,892
6. Step 6: Final answer
   x = 64,539,290,910.69