Finding the Third Proportional to 195,280 and 406,111

Step by Step Solution

1. Step 1: Write the proportion equation
   195,280 : 406,111 = 406,111 : x
2. Step 2: Convert to fraction form
   195,280/406,111 = 406,111/x
3. Step 3: Cross multiply
   195,280x = 406,111 × 406,111
4. Step 4: Simplify right side
   195,280x = 164,926,144,321
5. Step 5: Solve for x
   x = 164,926,144,321/195,280
6. Step 6: Final answer
   x = 844,562.39