Finding the Third Proportional to 69,328.50 and 141,942

Step by Step Solution

1. Step 1: Write the proportion equation
   69,328.50 : 141,942 = 141,942 : x
2. Step 2: Convert to fraction form
   69,328.50/141,942 = 141,942/x
3. Step 3: Cross multiply
   69,328.50x = 141,942 × 141,942
4. Step 4: Simplify right side
   69,328.50x = 20,147,531,364
5. Step 5: Solve for x
   x = 20,147,531,364/69,328.50
6. Step 6: Final answer
   x = 290,609.65