Finding the Third Proportional to 29,128.50 and 42,279.75

Step by Step Solution

1. Step 1: Write the proportion equation
   29,128.50 : 42,279.75 = 42,279.75 : x
2. Step 2: Convert to fraction form
   29,128.50/42,279.75 = 42,279.75/x
3. Step 3: Cross multiply
   29,128.50x = 42,279.75 × 42,279.75
4. Step 4: Simplify right side
   29,128.50x = 1,787,577,260.06
5. Step 5: Solve for x
   x = 1,787,577,260.06/29,128.50
6. Step 6: Final answer
   x = 61,368.67