Finding the Third Proportional to 79,438,493,696 and 172,824,015,808

Step by Step Solution

1. Step 1: Write the proportion equation
   79,438,493,696 : 172,824,015,808 = 172,824,015,808 : x
2. Step 2: Convert to fraction form
   79,438,493,696/172,824,015,808 = 172,824,015,808/x
3. Step 3: Cross multiply
   79,438,493,696x = 172,824,015,808 × 172,824,015,808
4. Step 4: Simplify right side
   79,438,493,696x = 29,868,140,440,003,834,544,128
5. Step 5: Solve for x
   x = 29,868,140,440,003,834,544,128/79,438,493,696
6. Step 6: Final answer
   x = 375,990,770,347.50