Finding the Third Proportional to 42,598.83 and 66,145.78

Step by Step Solution

1. Step 1: Write the proportion equation
   42,598.83 : 66,145.78 = 66,145.78 : x
2. Step 2: Convert to fraction form
   42,598.83/66,145.78 = 66,145.78/x
3. Step 3: Cross multiply
   42,598.83x = 66,145.78 × 66,145.78
4. Step 4: Simplify right side
   42,598.83x = 4,375,264,377.17
5. Step 5: Solve for x
   x = 4,375,264,377.17/42,598.83
6. Step 6: Final answer
   x = 102,708.56