Finding the Third Proportional to 129,870.50 and 194,282.50

Step by Step Solution

1. Step 1: Write the proportion equation
   129,870.50 : 194,282.50 = 194,282.50 : x
2. Step 2: Convert to fraction form
   129,870.50/194,282.50 = 194,282.50/x
3. Step 3: Cross multiply
   129,870.50x = 194,282.50 × 194,282.50
4. Step 4: Simplify right side
   129,870.50x = 37,745,689,806.25
5. Step 5: Solve for x
   x = 37,745,689,806.25/129,870.50
6. Step 6: Final answer
   x = 290,640.98