Finding the Third Proportional to 42,135.19 and 91,018.69

Step by Step Solution

1. Step 1: Write the proportion equation
   42,135.19 : 91,018.69 = 91,018.69 : x
2. Step 2: Convert to fraction form
   42,135.19/91,018.69 = 91,018.69/x
3. Step 3: Cross multiply
   42,135.19x = 91,018.69 × 91,018.69
4. Step 4: Simplify right side
   42,135.19x = 8,284,401,474.22
5. Step 5: Solve for x
   x = 8,284,401,474.22/42,135.19
6. Step 6: Final answer
   x = 196,614.80