Finding the Third Proportional to 128,796.50 and 197,030

Step by Step Solution

1. Step 1: Write the proportion equation
   128,796.50 : 197,030 = 197,030 : x
2. Step 2: Convert to fraction form
   128,796.50/197,030 = 197,030/x
3. Step 3: Cross multiply
   128,796.50x = 197,030 × 197,030
4. Step 4: Simplify right side
   128,796.50x = 38,820,820,900
5. Step 5: Solve for x
   x = 38,820,820,900/128,796.50
6. Step 6: Final answer
   x = 301,412.08