Finding the Third Proportional to 31,805,809,328 and 69,196,621,792

Step by Step Solution

1. Step 1: Write the proportion equation
   31,805,809,328 : 69,196,621,792 = 69,196,621,792 : x
2. Step 2: Convert to fraction form
   31,805,809,328/69,196,621,792 = 69,196,621,792/x
3. Step 3: Cross multiply
   31,805,809,328x = 69,196,621,792 × 69,196,621,792
4. Step 4: Simplify right side
   31,805,809,328x = 4,788,172,467,425,088,897,024
5. Step 5: Solve for x
   x = 4,788,172,467,425,088,897,024/31,805,809,328
6. Step 6: Final answer
   x = 150,543,959,376.94