Finding the Third Proportional to 65,380.50 and 100,615.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,380.50 : 100,615.50 = 100,615.50 : x
2. Step 2: Convert to fraction form
   65,380.50/100,615.50 = 100,615.50/x
3. Step 3: Cross multiply
   65,380.50x = 100,615.50 × 100,615.50
4. Step 4: Simplify right side
   65,380.50x = 10,123,478,840.25
5. Step 5: Solve for x
   x = 10,123,478,840.25/65,380.50
6. Step 6: Final answer
   x = 154,839.42