Finding the Third Proportional to 42,424 and 63,640

Step by Step Solution

1. Step 1: Write the proportion equation
   42,424 : 63,640 = 63,640 : x
2. Step 2: Convert to fraction form
   42,424/63,640 = 63,640/x
3. Step 3: Cross multiply
   42,424x = 63,640 × 63,640
4. Step 4: Simplify right side
   42,424x = 4,050,049,600
5. Step 5: Solve for x
   x = 4,050,049,600/42,424
6. Step 6: Final answer
   x = 95,466.00