Finding the Third Proportional to 31,480.84 and 68,036.20

Step by Step Solution

1. Step 1: Write the proportion equation
   31,480.84 : 68,036.20 = 68,036.20 : x
2. Step 2: Convert to fraction form
   31,480.84/68,036.20 = 68,036.20/x
3. Step 3: Cross multiply
   31,480.84x = 68,036.20 × 68,036.20
4. Step 4: Simplify right side
   31,480.84x = 4,628,924,935.67
5. Step 5: Solve for x
   x = 4,628,924,935.67/31,480.84
6. Step 6: Final answer
   x = 147,039.44