Finding the Third Proportional to 129,679.50 and 302,892

Step by Step Solution

1. Step 1: Write the proportion equation
   129,679.50 : 302,892 = 302,892 : x
2. Step 2: Convert to fraction form
   129,679.50/302,892 = 302,892/x
3. Step 3: Cross multiply
   129,679.50x = 302,892 × 302,892
4. Step 4: Simplify right side
   129,679.50x = 91,743,563,664
5. Step 5: Solve for x
   x = 91,743,563,664/129,679.50
6. Step 6: Final answer
   x = 707,463.89