Finding the Third Proportional to 129,699.50 and 238,087

Step by Step Solution

1. Step 1: Write the proportion equation
   129,699.50 : 238,087 = 238,087 : x
2. Step 2: Convert to fraction form
   129,699.50/238,087 = 238,087/x
3. Step 3: Cross multiply
   129,699.50x = 238,087 × 238,087
4. Step 4: Simplify right side
   129,699.50x = 56,685,419,569
5. Step 5: Solve for x
   x = 56,685,419,569/129,699.50
6. Step 6: Final answer
   x = 437,051.95