Finding the Third Proportional to 19,734.89 and 42,628.78

Step by Step Solution

1. Step 1: Write the proportion equation
   19,734.89 : 42,628.78 = 42,628.78 : x
2. Step 2: Convert to fraction form
   19,734.89/42,628.78 = 42,628.78/x
3. Step 3: Cross multiply
   19,734.89x = 42,628.78 × 42,628.78
4. Step 4: Simplify right side
   19,734.89x = 1,817,212,990.86
5. Step 5: Solve for x
   x = 1,817,212,990.86/19,734.89
6. Step 6: Final answer
   x = 92,081.23