Finding the Third Proportional to 28,639.50 and 61,410

Step by Step Solution

1. Step 1: Write the proportion equation
   28,639.50 : 61,410 = 61,410 : x
2. Step 2: Convert to fraction form
   28,639.50/61,410 = 61,410/x
3. Step 3: Cross multiply
   28,639.50x = 61,410 × 61,410
4. Step 4: Simplify right side
   28,639.50x = 3,771,188,100
5. Step 5: Solve for x
   x = 3,771,188,100/28,639.50
6. Step 6: Final answer
   x = 131,677.86