Finding the Third Proportional to 50,766,696 and 78,478,836

Step by Step Solution

1. Step 1: Write the proportion equation
   50,766,696 : 78,478,836 = 78,478,836 : x
2. Step 2: Convert to fraction form
   50,766,696/78,478,836 = 78,478,836/x
3. Step 3: Cross multiply
   50,766,696x = 78,478,836 × 78,478,836
4. Step 4: Simplify right side
   50,766,696x = 6,158,927,699,914,896
5. Step 5: Solve for x
   x = 6,158,927,699,914,896/50,766,696
6. Step 6: Final answer
   x = 121,318,269.36