Finding the Third Proportional to 19,519.31 and 42,319.13

Step by Step Solution

1. Step 1: Write the proportion equation
   19,519.31 : 42,319.13 = 42,319.13 : x
2. Step 2: Convert to fraction form
   19,519.31/42,319.13 = 42,319.13/x
3. Step 3: Cross multiply
   19,519.31x = 42,319.13 × 42,319.13
4. Step 4: Simplify right side
   19,519.31x = 1,790,908,340.77
5. Step 5: Solve for x
   x = 1,790,908,340.77/19,519.31
6. Step 6: Final answer
   x = 91,750.59