Finding the Third Proportional to 128,983.50 and 195,422.63

Step by Step Solution

1. Step 1: Write the proportion equation
   128,983.50 : 195,422.63 = 195,422.63 : x
2. Step 2: Convert to fraction form
   128,983.50/195,422.63 = 195,422.63/x
3. Step 3: Cross multiply
   128,983.50x = 195,422.63 × 195,422.63
4. Step 4: Simplify right side
   128,983.50x = 38,190,002,361.89
5. Step 5: Solve for x
   x = 38,190,002,361.89/128,983.50
6. Step 6: Final answer
   x = 296,084.40