Finding the Third Proportional to 31,381.31 and 68,981.63

Step by Step Solution

1. Step 1: Write the proportion equation
   31,381.31 : 68,981.63 = 68,981.63 : x
2. Step 2: Convert to fraction form
   31,381.31/68,981.63 = 68,981.63/x
3. Step 3: Cross multiply
   31,381.31x = 68,981.63 × 68,981.63
4. Step 4: Simplify right side
   31,381.31x = 4,758,464,587.64
5. Step 5: Solve for x
   x = 4,758,464,587.64/31,381.31
6. Step 6: Final answer
   x = 151,633.70