Finding the Third Proportional to 85,402,947,055 and 177,874,644,131

Step by Step Solution

1. Step 1: Write the proportion equation
   85,402,947,055 : 177,874,644,131 = 177,874,644,131 : x
2. Step 2: Convert to fraction form
   85,402,947,055/177,874,644,131 = 177,874,644,131/x
3. Step 3: Cross multiply
   85,402,947,055x = 177,874,644,131 × 177,874,644,131
4. Step 4: Simplify right side
   85,402,947,055x = 31,639,389,024,729,891,340,288
5. Step 5: Solve for x
   x = 31,639,389,024,729,891,340,288/85,402,947,055
6. Step 6: Final answer
   x = 370,471,864,446.95