Finding the Third Proportional to 30,219 and 64,591.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,219 : 64,591.50 = 64,591.50 : x
2. Step 2: Convert to fraction form
   30,219/64,591.50 = 64,591.50/x
3. Step 3: Cross multiply
   30,219x = 64,591.50 × 64,591.50
4. Step 4: Simplify right side
   30,219x = 4,172,061,872.25
5. Step 5: Solve for x
   x = 4,172,061,872.25/30,219
6. Step 6: Final answer
   x = 138,060.88