Finding the Third Proportional to 19,699 and 42,555.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,699 : 42,555.50 = 42,555.50 : x
2. Step 2: Convert to fraction form
   19,699/42,555.50 = 42,555.50/x
3. Step 3: Cross multiply
   19,699x = 42,555.50 × 42,555.50
4. Step 4: Simplify right side
   19,699x = 1,810,970,580.25
5. Step 5: Solve for x
   x = 1,810,970,580.25/19,699
6. Step 6: Final answer
   x = 91,932.11