Finding the Third Proportional to 42,292.50 and 91,872.75

Step by Step Solution

1. Step 1: Write the proportion equation
   42,292.50 : 91,872.75 = 91,872.75 : x
2. Step 2: Convert to fraction form
   42,292.50/91,872.75 = 91,872.75/x
3. Step 3: Cross multiply
   42,292.50x = 91,872.75 × 91,872.75
4. Step 4: Simplify right side
   42,292.50x = 8,440,602,192.56
5. Step 5: Solve for x
   x = 8,440,602,192.56/42,292.50
6. Step 6: Final answer
   x = 199,576.81