Finding the Third Proportional to 3,686,124,964.50 and 8,123,599,611

Step by Step Solution

1. Step 1: Write the proportion equation
   3,686,124,964.50 : 8,123,599,611 = 8,123,599,611 : x
2. Step 2: Convert to fraction form
   3,686,124,964.50/8,123,599,611 = 8,123,599,611/x
3. Step 3: Cross multiply
   3,686,124,964.50x = 8,123,599,611 × 8,123,599,611
4. Step 4: Simplify right side
   3,686,124,964.50x = 65,992,870,639,839,354,880
5. Step 5: Solve for x
   x = 65,992,870,639,839,354,880/3,686,124,964.50
6. Step 6: Final answer
   x = 17,903,047,583.95