Finding the Third Proportional to 61,026.25 and 128,613.25

Step by Step Solution

1. Step 1: Write the proportion equation
   61,026.25 : 128,613.25 = 128,613.25 : x
2. Step 2: Convert to fraction form
   61,026.25/128,613.25 = 128,613.25/x
3. Step 3: Cross multiply
   61,026.25x = 128,613.25 × 128,613.25
4. Step 4: Simplify right side
   61,026.25x = 16,541,368,075.56
5. Step 5: Solve for x
   x = 16,541,368,075.56/61,026.25
6. Step 6: Final answer
   x = 271,053.33