Finding the Third Proportional to 61,452.75 and 129,085.50

Step by Step Solution

1. Step 1: Write the proportion equation
   61,452.75 : 129,085.50 = 129,085.50 : x
2. Step 2: Convert to fraction form
   61,452.75/129,085.50 = 129,085.50/x
3. Step 3: Cross multiply
   61,452.75x = 129,085.50 × 129,085.50
4. Step 4: Simplify right side
   61,452.75x = 16,663,066,310.25
5. Step 5: Solve for x
   x = 16,663,066,310.25/61,452.75
6. Step 6: Final answer
   x = 271,152.49