Finding the Third Proportional to 58,891.50 and 128,784

Step by Step Solution

1. Step 1: Write the proportion equation
   58,891.50 : 128,784 = 128,784 : x
2. Step 2: Convert to fraction form
   58,891.50/128,784 = 128,784/x
3. Step 3: Cross multiply
   58,891.50x = 128,784 × 128,784
4. Step 4: Simplify right side
   58,891.50x = 16,585,318,656
5. Step 5: Solve for x
   x = 16,585,318,656/58,891.50
6. Step 6: Final answer
   x = 281,625.00