Finding the Third Proportional to 28,239.84 and 61,128.89

Step by Step Solution

1. Step 1: Write the proportion equation
   28,239.84 : 61,128.89 = 61,128.89 : x
2. Step 2: Convert to fraction form
   28,239.84/61,128.89 = 61,128.89/x
3. Step 3: Cross multiply
   28,239.84x = 61,128.89 × 61,128.89
4. Step 4: Simplify right side
   28,239.84x = 3,736,741,269.04
5. Step 5: Solve for x
   x = 3,736,741,269.04/28,239.84
6. Step 6: Final answer
   x = 132,321.60