Finding the Third Proportional to 40,642 and 64,898

Step by Step Solution

1. Step 1: Write the proportion equation
   40,642 : 64,898 = 64,898 : x
2. Step 2: Convert to fraction form
   40,642/64,898 = 64,898/x
3. Step 3: Cross multiply
   40,642x = 64,898 × 64,898
4. Step 4: Simplify right side
   40,642x = 4,211,750,404
5. Step 5: Solve for x
   x = 4,211,750,404/40,642
6. Step 6: Final answer
   x = 103,630.49