Finding the Third Proportional to 139,968 and 217,082.53

Step by Step Solution

1. Step 1: Write the proportion equation
   139,968 : 217,082.53 = 217,082.53 : x
2. Step 2: Convert to fraction form
   139,968/217,082.53 = 217,082.53/x
3. Step 3: Cross multiply
   139,968x = 217,082.53 × 217,082.53
4. Step 4: Simplify right side
   139,968x = 47,124,825,373.91
5. Step 5: Solve for x
   x = 47,124,825,373.91/139,968
6. Step 6: Final answer
   x = 336,682.85