Finding the Third Proportional to 129,700.50 and 238,089

Step by Step Solution

1. Step 1: Write the proportion equation
   129,700.50 : 238,089 = 238,089 : x
2. Step 2: Convert to fraction form
   129,700.50/238,089 = 238,089/x
3. Step 3: Cross multiply
   129,700.50x = 238,089 × 238,089
4. Step 4: Simplify right side
   129,700.50x = 56,686,371,921
5. Step 5: Solve for x
   x = 56,686,371,921/129,700.50
6. Step 6: Final answer
   x = 437,055.92