Finding the Third Proportional to 30,838.50 and 64,108.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,838.50 : 64,108.50 = 64,108.50 : x
2. Step 2: Convert to fraction form
   30,838.50/64,108.50 = 64,108.50/x
3. Step 3: Cross multiply
   30,838.50x = 64,108.50 × 64,108.50
4. Step 4: Simplify right side
   30,838.50x = 4,109,899,772.25
5. Step 5: Solve for x
   x = 4,109,899,772.25/30,838.50
6. Step 6: Final answer
   x = 133,271.71