Finding the Third Proportional to 4,931,778 and 7,738,452

Step by Step Solution

1. Step 1: Write the proportion equation
   4,931,778 : 7,738,452 = 7,738,452 : x
2. Step 2: Convert to fraction form
   4,931,778/7,738,452 = 7,738,452/x
3. Step 3: Cross multiply
   4,931,778x = 7,738,452 × 7,738,452
4. Step 4: Simplify right side
   4,931,778x = 59,883,639,356,304
5. Step 5: Solve for x
   x = 59,883,639,356,304/4,931,778
6. Step 6: Final answer
   x = 12,142,403.68