Finding the Third Proportional to 19,685 and 43,210

Step by Step Solution

1. Step 1: Write the proportion equation
   19,685 : 43,210 = 43,210 : x
2. Step 2: Convert to fraction form
   19,685/43,210 = 43,210/x
3. Step 3: Cross multiply
   19,685x = 43,210 × 43,210
4. Step 4: Simplify right side
   19,685x = 1,867,104,100
5. Step 5: Solve for x
   x = 1,867,104,100/19,685
6. Step 6: Final answer
   x = 94,849.08