Finding the Third Proportional to 128,818.50 and 197,058

Step by Step Solution

1. Step 1: Write the proportion equation
   128,818.50 : 197,058 = 197,058 : x
2. Step 2: Convert to fraction form
   128,818.50/197,058 = 197,058/x
3. Step 3: Cross multiply
   128,818.50x = 197,058 × 197,058
4. Step 4: Simplify right side
   128,818.50x = 38,831,855,364
5. Step 5: Solve for x
   x = 38,831,855,364/128,818.50
6. Step 6: Final answer
   x = 301,446.26