Finding the Third Proportional to 65,215.50 and 99,193.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,215.50 : 99,193.50 = 99,193.50 : x
2. Step 2: Convert to fraction form
   65,215.50/99,193.50 = 99,193.50/x
3. Step 3: Cross multiply
   65,215.50x = 99,193.50 × 99,193.50
4. Step 4: Simplify right side
   65,215.50x = 9,839,350,442.25
5. Step 5: Solve for x
   x = 9,839,350,442.25/65,215.50
6. Step 6: Final answer
   x = 150,874.42