Finding the Third Proportional to 79,978,891,495.50 and 171,994,331,142

Step by Step Solution

1. Step 1: Write the proportion equation
   79,978,891,495.50 : 171,994,331,142 = 171,994,331,142 : x
2. Step 2: Convert to fraction form
   79,978,891,495.50/171,994,331,142 = 171,994,331,142/x
3. Step 3: Cross multiply
   79,978,891,495.50x = 171,994,331,142 × 171,994,331,142
4. Step 4: Simplify right side
   79,978,891,495.50x = 29,582,049,944,983,952,162,816
5. Step 5: Solve for x
   x = 29,582,049,944,983,952,162,816/79,978,891,495.50
6. Step 6: Final answer
   x = 369,873,217,693.30