Finding the Third Proportional to 42,229.69 and 91,809.94

Step by Step Solution

1. Step 1: Write the proportion equation
   42,229.69 : 91,809.94 = 91,809.94 : x
2. Step 2: Convert to fraction form
   42,229.69/91,809.94 = 91,809.94/x
3. Step 3: Cross multiply
   42,229.69x = 91,809.94 × 91,809.94
4. Step 4: Simplify right side
   42,229.69x = 8,429,064,623.75
5. Step 5: Solve for x
   x = 8,429,064,623.75/42,229.69
6. Step 6: Final answer
   x = 199,600.45