Finding the Third Proportional to 42,187.50 and 91,722.38

Step by Step Solution

1. Step 1: Write the proportion equation
   42,187.50 : 91,722.38 = 91,722.38 : x
2. Step 2: Convert to fraction form
   42,187.50/91,722.38 = 91,722.38/x
3. Step 3: Cross multiply
   42,187.50x = 91,722.38 × 91,722.38
4. Step 4: Simplify right side
   42,187.50x = 8,412,994,075.64
5. Step 5: Solve for x
   x = 8,412,994,075.64/42,187.50
6. Step 6: Final answer
   x = 199,419.12