Finding the Third Proportional to 83,431.50 and 129,294

Step by Step Solution

1. Step 1: Write the proportion equation
   83,431.50 : 129,294 = 129,294 : x
2. Step 2: Convert to fraction form
   83,431.50/129,294 = 129,294/x
3. Step 3: Cross multiply
   83,431.50x = 129,294 × 129,294
4. Step 4: Simplify right side
   83,431.50x = 16,716,938,436
5. Step 5: Solve for x
   x = 16,716,938,436/83,431.50
6. Step 6: Final answer
   x = 200,367.23