Finding the Third Proportional to 31,805,809,330 and 69,196,621,796

Step by Step Solution

1. Step 1: Write the proportion equation
   31,805,809,330 : 69,196,621,796 = 69,196,621,796 : x
2. Step 2: Convert to fraction form
   31,805,809,330/69,196,621,796 = 69,196,621,796/x
3. Step 3: Cross multiply
   31,805,809,330x = 69,196,621,796 × 69,196,621,796
4. Step 4: Simplify right side
   31,805,809,330x = 4,788,172,467,978,662,576,128
5. Step 5: Solve for x
   x = 4,788,172,467,978,662,576,128/31,805,809,330
6. Step 6: Final answer
   x = 150,543,959,384.88