Finding the Third Proportional to 30,600.28 and 64,874.67

Step by Step Solution

1. Step 1: Write the proportion equation
   30,600.28 : 64,874.67 = 64,874.67 : x
2. Step 2: Convert to fraction form
   30,600.28/64,874.67 = 64,874.67/x
3. Step 3: Cross multiply
   30,600.28x = 64,874.67 × 64,874.67
4. Step 4: Simplify right side
   30,600.28x = 4,208,723,050.89
5. Step 5: Solve for x
   x = 4,208,723,050.89/30,600.28
6. Step 6: Final answer
   x = 137,538.70