Finding the Third Proportional to 31,129,766 and 49,729,990

Step by Step Solution

1. Step 1: Write the proportion equation
   31,129,766 : 49,729,990 = 49,729,990 : x
2. Step 2: Convert to fraction form
   31,129,766/49,729,990 = 49,729,990/x
3. Step 3: Cross multiply
   31,129,766x = 49,729,990 × 49,729,990
4. Step 4: Simplify right side
   31,129,766x = 2,473,071,905,400,100
5. Step 5: Solve for x
   x = 2,473,071,905,400,100/31,129,766
6. Step 6: Final answer
   x = 79,443,960.66