Finding the Third Proportional to 129,082 and 281,129.38

Step by Step Solution

1. Step 1: Write the proportion equation
   129,082 : 281,129.38 = 281,129.38 : x
2. Step 2: Convert to fraction form
   129,082/281,129.38 = 281,129.38/x
3. Step 3: Cross multiply
   129,082x = 281,129.38 × 281,129.38
4. Step 4: Simplify right side
   129,082x = 79,033,725,487.89
5. Step 5: Solve for x
   x = 79,033,725,487.89/129,082
6. Step 6: Final answer
   x = 612,275.34