Finding the Third Proportional to 31,210.31 and 49,640.34

Step by Step Solution

1. Step 1: Write the proportion equation
   31,210.31 : 49,640.34 = 49,640.34 : x
2. Step 2: Convert to fraction form
   31,210.31/49,640.34 = 49,640.34/x
3. Step 3: Cross multiply
   31,210.31x = 49,640.34 × 49,640.34
4. Step 4: Simplify right side
   31,210.31x = 2,464,163,727.62
5. Step 5: Solve for x
   x = 2,464,163,727.62/31,210.31
6. Step 6: Final answer
   x = 78,953.51