Finding the Third Proportional to 42,639.75 and 63,959.63

Step by Step Solution

1. Step 1: Write the proportion equation
   42,639.75 : 63,959.63 = 63,959.63 : x
2. Step 2: Convert to fraction form
   42,639.75/63,959.63 = 63,959.63/x
3. Step 3: Cross multiply
   42,639.75x = 63,959.63 × 63,959.63
4. Step 4: Simplify right side
   42,639.75x = 4,090,833,630.14
5. Step 5: Solve for x
   x = 4,090,833,630.14/42,639.75
6. Step 6: Final answer
   x = 95,939.44