Finding the Third Proportional to 19,620.56 and 42,908.06

Step by Step Solution

1. Step 1: Write the proportion equation
   19,620.56 : 42,908.06 = 42,908.06 : x
2. Step 2: Convert to fraction form
   19,620.56/42,908.06 = 42,908.06/x
3. Step 3: Cross multiply
   19,620.56x = 42,908.06 × 42,908.06
4. Step 4: Simplify right side
   19,620.56x = 1,841,101,827.50
5. Step 5: Solve for x
   x = 1,841,101,827.50/19,620.56
6. Step 6: Final answer
   x = 93,835.32