Finding the Third Proportional to 395,384,019 and 823,493,731.50

Step by Step Solution

1. Step 1: Write the proportion equation
   395,384,019 : 823,493,731.50 = 823,493,731.50 : x
2. Step 2: Convert to fraction form
   395,384,019/823,493,731.50 = 823,493,731.50/x
3. Step 3: Cross multiply
   395,384,019x = 823,493,731.50 × 823,493,731.50
4. Step 4: Simplify right side
   395,384,019x = 678,141,925,819,794,048
5. Step 5: Solve for x
   x = 678,141,925,819,794,048/395,384,019
6. Step 6: Final answer
   x = 1,715,147,535.64