Finding the Third Proportional to 128,955 and 197,248.50

Step by Step Solution

1. Step 1: Write the proportion equation
   128,955 : 197,248.50 = 197,248.50 : x
2. Step 2: Convert to fraction form
   128,955/197,248.50 = 197,248.50/x
3. Step 3: Cross multiply
   128,955x = 197,248.50 × 197,248.50
4. Step 4: Simplify right side
   128,955x = 38,906,970,752.25
5. Step 5: Solve for x
   x = 38,906,970,752.25/128,955
6. Step 6: Final answer
   x = 301,709.67