Finding the Third Proportional to 42,389,578 and 91,274,436

Step by Step Solution

1. Step 1: Write the proportion equation
   42,389,578 : 91,274,436 = 91,274,436 : x
2. Step 2: Convert to fraction form
   42,389,578/91,274,436 = 91,274,436/x
3. Step 3: Cross multiply
   42,389,578x = 91,274,436 × 91,274,436
4. Step 4: Simplify right side
   42,389,578x = 8,331,022,667,118,096
5. Step 5: Solve for x
   x = 8,331,022,667,118,096/42,389,578
6. Step 6: Final answer
   x = 196,534,692.26