Finding the Third Proportional to 71,760.94 and 100,389.38

Step by Step Solution

1. Step 1: Write the proportion equation
   71,760.94 : 100,389.38 = 100,389.38 : x
2. Step 2: Convert to fraction form
   71,760.94/100,389.38 = 100,389.38/x
3. Step 3: Cross multiply
   71,760.94x = 100,389.38 × 100,389.38
4. Step 4: Simplify right side
   71,760.94x = 10,078,026,612.89
5. Step 5: Solve for x
   x = 10,078,026,612.89/71,760.94
6. Step 6: Final answer
   x = 140,438.89