Finding the Third Proportional to 141,685.50 and 221,141.25

Step by Step Solution

1. Step 1: Write the proportion equation
   141,685.50 : 221,141.25 = 221,141.25 : x
2. Step 2: Convert to fraction form
   141,685.50/221,141.25 = 221,141.25/x
3. Step 3: Cross multiply
   141,685.50x = 221,141.25 × 221,141.25
4. Step 4: Simplify right side
   141,685.50x = 48,903,452,451.56
5. Step 5: Solve for x
   x = 48,903,452,451.56/141,685.50
6. Step 6: Final answer
   x = 345,154.96