Finding the Third Proportional to 31,213.69 and 48,912.19

Step by Step Solution

1. Step 1: Write the proportion equation
   31,213.69 : 48,912.19 = 48,912.19 : x
2. Step 2: Convert to fraction form
   31,213.69/48,912.19 = 48,912.19/x
3. Step 3: Cross multiply
   31,213.69x = 48,912.19 × 48,912.19
4. Step 4: Simplify right side
   31,213.69x = 2,392,402,086.04
5. Step 5: Solve for x
   x = 2,392,402,086.04/31,213.69
6. Step 6: Final answer
   x = 76,645.93