Finding the Third Proportional to 42,962.71 and 63,128.80

Step by Step Solution

1. Step 1: Write the proportion equation
   42,962.71 : 63,128.80 = 63,128.80 : x
2. Step 2: Convert to fraction form
   42,962.71/63,128.80 = 63,128.80/x
3. Step 3: Cross multiply
   42,962.71x = 63,128.80 × 63,128.80
4. Step 4: Simplify right side
   42,962.71x = 3,985,245,580.55
5. Step 5: Solve for x
   x = 3,985,245,580.55/42,962.71
6. Step 6: Final answer
   x = 92,760.58