Finding the Third Proportional to 19,628 and 42,385

Step by Step Solution

1. Step 1: Write the proportion equation
   19,628 : 42,385 = 42,385 : x
2. Step 2: Convert to fraction form
   19,628/42,385 = 42,385/x
3. Step 3: Cross multiply
   19,628x = 42,385 × 42,385
4. Step 4: Simplify right side
   19,628x = 1,796,488,225
5. Step 5: Solve for x
   x = 1,796,488,225/19,628
6. Step 6: Final answer
   x = 91,526.81