Finding the Third Proportional to 4,146,890,611 and 9,139,049,618

Step by Step Solution

1. Step 1: Write the proportion equation
   4,146,890,611 : 9,139,049,618 = 9,139,049,618 : x
2. Step 2: Convert to fraction form
   4,146,890,611/9,139,049,618 = 9,139,049,618/x
3. Step 3: Cross multiply
   4,146,890,611x = 9,139,049,618 × 9,139,049,618
4. Step 4: Simplify right side
   4,146,890,611x = 83,522,227,920,265,953,280
5. Step 5: Solve for x
   x = 83,522,227,920,265,953,280/4,146,890,611
6. Step 6: Final answer
   x = 20,140,928,651.15