Finding the Third Proportional to 19,278.56 and 42,247.69

Step by Step Solution

1. Step 1: Write the proportion equation
   19,278.56 : 42,247.69 = 42,247.69 : x
2. Step 2: Convert to fraction form
   19,278.56/42,247.69 = 42,247.69/x
3. Step 3: Cross multiply
   19,278.56x = 42,247.69 × 42,247.69
4. Step 4: Simplify right side
   19,278.56x = 1,784,867,099.10
5. Step 5: Solve for x
   x = 1,784,867,099.10/19,278.56
6. Step 6: Final answer
   x = 92,583.00