Finding the Third Proportional to 201,099 and 281,092.50

Step by Step Solution

1. Step 1: Write the proportion equation
   201,099 : 281,092.50 = 281,092.50 : x
2. Step 2: Convert to fraction form
   201,099/281,092.50 = 281,092.50/x
3. Step 3: Cross multiply
   201,099x = 281,092.50 × 281,092.50
4. Step 4: Simplify right side
   201,099x = 79,012,993,556.25
5. Step 5: Solve for x
   x = 79,012,993,556.25/201,099
6. Step 6: Final answer
   x = 392,905.95