Finding the Third Proportional to 42,027.19 and 90,424.69

Step by Step Solution

1. Step 1: Write the proportion equation
   42,027.19 : 90,424.69 = 90,424.69 : x
2. Step 2: Convert to fraction form
   42,027.19/90,424.69 = 90,424.69/x
3. Step 3: Cross multiply
   42,027.19x = 90,424.69 × 90,424.69
4. Step 4: Simplify right side
   42,027.19x = 8,176,624,109.47
5. Step 5: Solve for x
   x = 8,176,624,109.47/42,027.19
6. Step 6: Final answer
   x = 194,555.59