Finding the Third Proportional to 30,219.75 and 65,299.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,219.75 : 65,299.50 = 65,299.50 : x
2. Step 2: Convert to fraction form
   30,219.75/65,299.50 = 65,299.50/x
3. Step 3: Cross multiply
   30,219.75x = 65,299.50 × 65,299.50
4. Step 4: Simplify right side
   30,219.75x = 4,264,024,700.25
5. Step 5: Solve for x
   x = 4,264,024,700.25/30,219.75
6. Step 6: Final answer
   x = 141,100.59