Finding the Third Proportional to 129,472 and 196,910

Step by Step Solution

1. Step 1: Write the proportion equation
   129,472 : 196,910 = 196,910 : x
2. Step 2: Convert to fraction form
   129,472/196,910 = 196,910/x
3. Step 3: Cross multiply
   129,472x = 196,910 × 196,910
4. Step 4: Simplify right side
   129,472x = 38,773,548,100
5. Step 5: Solve for x
   x = 38,773,548,100/129,472
6. Step 6: Final answer
   x = 299,474.39