Finding the Third Proportional to 19,846.13 and 42,421.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,846.13 : 42,421.50 = 42,421.50 : x
2. Step 2: Convert to fraction form
   19,846.13/42,421.50 = 42,421.50/x
3. Step 3: Cross multiply
   19,846.13x = 42,421.50 × 42,421.50
4. Step 4: Simplify right side
   19,846.13x = 1,799,583,662.25
5. Step 5: Solve for x
   x = 1,799,583,662.25/19,846.13
6. Step 6: Final answer
   x = 90,676.83