Finding the Third Proportional to 139,352.91 and 213,523.17

Step by Step Solution

1. Step 1: Write the proportion equation
   139,352.91 : 213,523.17 = 213,523.17 : x
2. Step 2: Convert to fraction form
   139,352.91/213,523.17 = 213,523.17/x
3. Step 3: Cross multiply
   139,352.91x = 213,523.17 × 213,523.17
4. Step 4: Simplify right side
   139,352.91x = 45,592,144,927.56
5. Step 5: Solve for x
   x = 45,592,144,927.56/139,352.91
6. Step 6: Final answer
   x = 327,170.39