Finding the Third Proportional to 141,691.50 and 219,355.50

Step by Step Solution

1. Step 1: Write the proportion equation
   141,691.50 : 219,355.50 = 219,355.50 : x
2. Step 2: Convert to fraction form
   141,691.50/219,355.50 = 219,355.50/x
3. Step 3: Cross multiply
   141,691.50x = 219,355.50 × 219,355.50
4. Step 4: Simplify right side
   141,691.50x = 48,116,835,380.25
5. Step 5: Solve for x
   x = 48,116,835,380.25/141,691.50
6. Step 6: Final answer
   x = 339,588.72