Finding the Third Proportional to 59,731.25 and 128,316

Step by Step Solution

1. Step 1: Write the proportion equation
   59,731.25 : 128,316 = 128,316 : x
2. Step 2: Convert to fraction form
   59,731.25/128,316 = 128,316/x
3. Step 3: Cross multiply
   59,731.25x = 128,316 × 128,316
4. Step 4: Simplify right side
   59,731.25x = 16,464,995,856
5. Step 5: Solve for x
   x = 16,464,995,856/59,731.25
6. Step 6: Final answer
   x = 275,651.29